{"title":"BOCI BLT461 Laser Head Parts","description":"\u003cp\u003eAftermarket consumables that fit the BOCI BLT461: nozzles, protective windows, ceramics and other wear parts, each matched to the BOCI part number it replaces.\u003c\/p\u003e","products":[{"product_id":"boci-bochu-d28-aftermarket-laser-cutting-nozzle-pack-of-10-single-double-layer-m11-x-h15","title":"BOCI Bochu D28 Aftermarket Laser Cutting Nozzle, Pack of 10, Single \u0026 Double Layer, M11 x H15","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eA pack of 10 copper laser cutting nozzles in the BOCI (Bochu) standard D28 format: 28 mm outer diameter, 15 mm height and an M11 x 0.75 thread, the nozzle used on BLT310 and BLT4xx series cutting heads. Sizes are listed against the BOCI standard nozzle part numbers (DY.Z.E00xxAA single layer, Y.Z.E0034 double layer) where BOCI publishes them.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eEach nozzle is machined from high conductivity copper with a concentric bore for a centred gas jet and a clean capacitive sensing electrode. Because D28 x H15 x M11 is a shared industry size, the same nozzle also fits Raytools D28 and Precitec HP1.5 inch heads in a mixed workshop.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eSingle layer for oxygen cutting of carbon steel, double layer for nitrogen or air cutting of stainless steel and aluminium. Packs of 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e10 nozzles, all the same layer and bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e28 mm (1 3\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e15 mm (19\/32\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM11 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCopper (high conductivity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eLayer\u003c\/td\u003e\n\u003ctd\u003esingle layer or double layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eBore Sizes\u003c\/td\u003e\n\u003ctd\u003e0.8 mm to 6 mm (17 sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eBOCI DY.Z.E0035AA, DY.Z.E0036AA, DY.Z.E0037AA and more (see table)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI (Bochu) cutting heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421s-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421S\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eBOCI heads that take the D28 x H15 x M11 standard nozzle. Check the nozzle currently fitted if unsure.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eSame nozzle size, other brands\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan class=\"spm-chip\"\u003eRaytools D28 heads\u003c\/span\u003e\u003cspan class=\"spm-chip\"\u003ePrecitec HP1.5 inch heads\u003c\/span\u003e\u003cspan class=\"spm-chip\"\u003eWSX\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eD28 x H15 x M11 is a shared industry size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBore\u003c\/th\u003e\n\u003cth\u003eSingle Layer\u003cspan class=\"spm-sub\"\u003eBOCI no. (SPM no.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eDouble Layer\u003cspan class=\"spm-sub\"\u003eBOCI no. (SPM no.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e0.8 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S08)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D08)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S10)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D10)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.2 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0049AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S12)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D12)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.3 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S13)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D13)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.4 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0035AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S14)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D14)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.5 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S15)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D15)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.6 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0036AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S16)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D16)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.7 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S17)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D17)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e1.8 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0037AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S18)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D18)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e2.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0038AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S20)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eY.Z.E0034\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D20)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e2.5 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0039AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S25)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D25)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e3.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0040AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S30)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D30)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e3.5 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S35)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D35)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e4.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDY.Z.E0053AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S40)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D40)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e4.5 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S45)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D45)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e5.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S50)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D50)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003e6.0 mm\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-S60)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color:#999\"\u003eNo BOCI equivalent\u003c\/span\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2114-D60)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eCarbon steel, oxygen\u003c\/strong\u003e\u003cbr\u003eUse single layer nozzles. Small bores (0.8 to 1.2 mm) for thin sheet, 1.5 to 2.0 mm for most 3 to 10 mm plate, 2.5 mm and up for thick plate.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eStainless steel and aluminium, nitrogen or air\u003c\/strong\u003e\u003cbr\u003eUse double layer nozzles. Larger bores are used on thicker material where more gas is needed.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003ePoor cut quality\u003c\/strong\u003e\u003cbr\u003eDross, a wandering kerf or bad piercing are often caused by a damaged or dirty nozzle. Fit a new nozzle of the same bore before changing other settings.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eHeight sensing faults\u003c\/strong\u003e\u003cbr\u003eThe nozzle is part of the capacitive height sensor. A worn or loose nozzle causes height alarms.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaserThings (pack of 10)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 25.35\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaser Consumables (pack of 10)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 27.82\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eQuality Laser Supply (pack of 10)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 35.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart (pack of 10)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 20.32\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 20.32 is 20% to 42% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eWill this fit my BOCI head?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eBOCI heads that take the D28 x H15 x M11 standard nozzle. Check the nozzle currently fitted if unsure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs this a genuine BOCI part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket nozzle made to the same 28 x 15 mm, M11 dimensions. BOCI part numbers are listed so you can match your existing nozzle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow many nozzles are in a pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003e10, all the same layer and bore size you select. Nozzles are only sold in packs of 10.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eSingle layer or double layer?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eSingle layer for oxygen cutting of carbon steel. Double layer for nitrogen or air cutting of stainless steel and aluminium, where the inner cone stabilises the high pressure jet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eWhich bore should I choose?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eUse your machine's cutting chart for the material and thickness. As a guide, thin sheet runs 0.8 to 1.5 mm, mid plate 1.5 to 2.5 mm and thick plate 3.0 mm and up. Bigger bores pass more gas at lower velocity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow often should nozzles be changed?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eWhen the bore is damaged, out of round or coated in spatter that will not clean off, or when height sensing becomes unstable. Busy machines often change nozzles daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eDo you ship worldwide?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eYes. Shipping options and costs for your country are shown at checkout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will this fit my BOCI head?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"BOCI heads that take the D28 x H15 x M11 standard nozzle. Check the nozzle currently fitted if unsure.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a genuine BOCI part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket nozzle made to the same 28 x 15 mm, M11 dimensions. BOCI part numbers are listed so you can match your existing nozzle.\"}}, {\"@type\": \"Question\", \"name\": \"How many nozzles are in a pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"10, all the same layer and bore size you select. Nozzles are only sold in packs of 10.\"}}, {\"@type\": \"Question\", \"name\": \"Single layer or double layer?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Single layer for oxygen cutting of carbon steel. Double layer for nitrogen or air cutting of stainless steel and aluminium, where the inner cone stabilises the high pressure jet.\"}}, {\"@type\": \"Question\", \"name\": \"Which bore should I choose?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use your machine's cutting chart for the material and thickness. As a guide, thin sheet runs 0.8 to 1.5 mm, mid plate 1.5 to 2.5 mm and thick plate 3.0 mm and up. Bigger bores pass more gas at lower velocity.\"}}, {\"@type\": \"Question\", \"name\": \"How often should nozzles be changed?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"When the bore is damaged, out of round or coated in spatter that will not clean off, or when height sensing becomes unstable. Busy machines often change nozzles daily.\"}}, {\"@type\": \"Question\", \"name\": \"Do you ship worldwide?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Shipping options and costs for your country are shown at checkout.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"Single \/ 0.8 mm","offer_id":67557077778732,"sku":"SPM-LAS-2114-S08-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 0.8 mm","offer_id":67557077811500,"sku":"SPM-LAS-2114-D08-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.0 mm","offer_id":67557077844268,"sku":"SPM-LAS-2114-S10-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.0 mm","offer_id":67557077877036,"sku":"SPM-LAS-2114-D10-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.2 mm","offer_id":67557077909804,"sku":"SPM-LAS-2114-S12-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.2 mm","offer_id":67557077942572,"sku":"SPM-LAS-2114-D12-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.3 mm","offer_id":67557077975340,"sku":"SPM-LAS-2114-S13-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.3 mm","offer_id":67557078008108,"sku":"SPM-LAS-2114-D13-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.4 mm","offer_id":67557078040876,"sku":"SPM-LAS-2114-S14-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.4 mm","offer_id":67557078073644,"sku":"SPM-LAS-2114-D14-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.5 mm","offer_id":67557078106412,"sku":"SPM-LAS-2114-S15-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.5 mm","offer_id":67557078139180,"sku":"SPM-LAS-2114-D15-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.6 mm","offer_id":67557078171948,"sku":"SPM-LAS-2114-S16-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.6 mm","offer_id":67557078204716,"sku":"SPM-LAS-2114-D16-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.7 mm","offer_id":67557078237484,"sku":"SPM-LAS-2114-S17-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.7 mm","offer_id":67557078270252,"sku":"SPM-LAS-2114-D17-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 1.8 mm","offer_id":67557078303020,"sku":"SPM-LAS-2114-S18-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 1.8 mm","offer_id":67557078335788,"sku":"SPM-LAS-2114-D18-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 2.0 mm","offer_id":67557078368556,"sku":"SPM-LAS-2114-S20-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 2.0 mm","offer_id":67557078401324,"sku":"SPM-LAS-2114-D20-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 2.5 mm","offer_id":67557078434092,"sku":"SPM-LAS-2114-S25-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 2.5 mm","offer_id":67557078466860,"sku":"SPM-LAS-2114-D25-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 3.0 mm","offer_id":67557078499628,"sku":"SPM-LAS-2114-S30-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 3.0 mm","offer_id":67557078532396,"sku":"SPM-LAS-2114-D30-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 3.5 mm","offer_id":67557078565164,"sku":"SPM-LAS-2114-S35-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 3.5 mm","offer_id":67557078597932,"sku":"SPM-LAS-2114-D35-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 4.0 mm","offer_id":67557078630700,"sku":"SPM-LAS-2114-S40-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 4.0 mm","offer_id":67557078663468,"sku":"SPM-LAS-2114-D40-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 4.5 mm","offer_id":67557078696236,"sku":"SPM-LAS-2114-S45-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 4.5 mm","offer_id":67557078729004,"sku":"SPM-LAS-2114-D45-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 5.0 mm","offer_id":67557078761772,"sku":"SPM-LAS-2114-S50-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 5.0 mm","offer_id":67557078794540,"sku":"SPM-LAS-2114-D50-X10","price":26.48,"currency_code":"USD","in_stock":true},{"title":"Single \/ 6.0 mm","offer_id":67557078827308,"sku":"SPM-LAS-2114-S60-X10","price":20.32,"currency_code":"USD","in_stock":true},{"title":"Double \/ 6.0 mm","offer_id":67557078860076,"sku":"SPM-LAS-2114-D60-X10","price":26.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_ef72c665-1e92-494e-9f22-b837cbcafbb4.jpg?v=1790894344"},{"product_id":"boci-dp-v-p0048aa-aftermarket-protective-window-d25-4-x-4-mm-8-kw","title":"BOCI DP.V.P0048AA Aftermarket Protective Window, D25.4 x 4 mm, 8 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI DP.V.P0048AA. Size D25.4 x 4 mm, 8 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI DP.V.P0048AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD25.4 x 4 mm, 8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD25.4 x 4 mm, 8 kW\u003c\/td\u003e\n\u003ctd\u003eD25.4 x 4 mm, 8 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDP.V.P0048AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2138)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaser Consumables\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 1.79\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eCloudray\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 6.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eAmerican Photonics\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 30.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 1.43\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 1.43 is 20% to 95% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099209004,"sku":"SPM-LAS-2138-P1","price":1.43,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099241772,"sku":"SPM-LAS-2138-P5","price":6.6,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099274540,"sku":"SPM-LAS-2138-P10","price":12.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_cee8090b-8658-4404-b41e-17764e37e66e.jpg?v=1790912635"},{"product_id":"boci-dp-v-p0049aa-aftermarket-protective-window-d34-x-5-mm-8-to-10-kw","title":"BOCI DP.V.P0049AA Aftermarket Protective Window, D34 x 5 mm, 8 to 10 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI DP.V.P0049AA. Size D34 x 5 mm, 8 to 10 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI DP.V.P0049AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 8 to 10 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e10 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD34 x 5 mm, 8 to 10 kW\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 8 to 10 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDP.V.P0049AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2139)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaserThings\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 7.80\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaser Consumables\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 9.04\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eQuality Laser Supply\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 16.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 6.24\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 6.24 is 20% to 61% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099307308,"sku":"SPM-LAS-2139-P1","price":6.24,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099340076,"sku":"SPM-LAS-2139-P5","price":28.85,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099372844,"sku":"SPM-LAS-2139-P10","price":53.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_59cd6aca-73b4-42ef-8f6f-3ff38bb25bc1.jpg?v=1790912639"},{"product_id":"boci-p-s-b0021-aftermarket-protective-window-d34-x-5-mm-15-kw","title":"BOCI P.S.B0021 Aftermarket Protective Window, D34 x 5 mm, 15 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI P.S.B0021. Size D34 x 5 mm, 15 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI P.S.B0021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 15 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e15 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD34 x 5 mm, 15 kW\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 15 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eP.S.B0021\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2140)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099405612,"sku":"SPM-LAS-2140-P1","price":16.2,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099438380,"sku":"SPM-LAS-2140-P5","price":74.9,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099471148,"sku":"SPM-LAS-2140-P10","price":137.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_98067e78-28d7-450d-bff5-7b9486d5ea5a.jpg?v=1790912643"},{"product_id":"boci-dp-v-p0004aa-aftermarket-protective-window-d34-x-5-mm-20-kw","title":"BOCI DP.V.P0004AA Aftermarket Protective Window, D34 x 5 mm, 20 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI DP.V.P0004AA. Size D34 x 5 mm, 20 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI DP.V.P0004AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD34 x 5 mm, 20 kW\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 20 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDP.V.P0004AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2141)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaser Consumables\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 10.76\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eQuality Laser Supply\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 16.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e6 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 8.61\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 8.61 is 20% to 46% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099503916,"sku":"SPM-LAS-2141-P1","price":8.61,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099536684,"sku":"SPM-LAS-2141-P5","price":39.82,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099569452,"sku":"SPM-LAS-2141-P10","price":73.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_73fcf762-9aa2-4d48-b5b0-d10ab04a5866.jpg?v=1790912646"},{"product_id":"boci-dp-v-p0005aa-aftermarket-protective-window-d34-x-5-mm-30-kw","title":"BOCI DP.V.P0005AA Aftermarket Protective Window, D34 x 5 mm, 30 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI DP.V.P0005AA. Size D34 x 5 mm, 30 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI DP.V.P0005AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD34 x 5 mm, 30 kW\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 30 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDP.V.P0005AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2142)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eLaser Consumables\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 14.62\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e5 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 11.70\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 11.70 is approximately 20% less than this seller.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099602220,"sku":"SPM-LAS-2142-P1","price":11.7,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099634988,"sku":"SPM-LAS-2142-P5","price":54.11,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099667756,"sku":"SPM-LAS-2142-P10","price":99.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_6b5b6d5c-e2a0-45a9-aef7-d21cfed112c0.jpg?v=1790912649"},{"product_id":"boci-dp-v-p0012aa-aftermarket-protective-window-d34-x-5-mm-40-kw","title":"BOCI DP.V.P0012AA Aftermarket Protective Window, D34 x 5 mm, 40 kW","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket protective window for BOCI laser cutting heads. Replaces BOCI DP.V.P0012AA. Size D34 x 5 mm, 40 kW. Fused silica, anti reflection coated on both faces for 1064 nm fiber lasers.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eFits BLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI DP.V.P0012AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eSize\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 40 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e40 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFused silica, AR coated both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e1064 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt420-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT420\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt641-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT641\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eMatch the window size and part number in your head.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD34 x 5 mm, 40 kW\u003c\/td\u003e\n\u003ctd\u003eD34 x 5 mm, 40 kW\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDP.V.P0012AA\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2143)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT420, BLT421, BLT441, BLT461, BLT481, BLT641\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eRoutine changes\u003c\/strong\u003e\u003cbr\u003eReplace the window when it shows spatter, pitting or burn marks. A dirty window absorbs power and can crack.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eProtecting the focusing lens\u003c\/strong\u003e\u003cbr\u003eThe window keeps spatter and fume off the focusing lens above it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eLoss of cutting power\u003c\/strong\u003e\u003cbr\u003eIf piercing slows or the kerf widens, check the protective window before changing cutting parameters.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow do I know this is the right window?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eCheck the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs it a genuine part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same window in each. The 10 pack has the lowest price per window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eHow should I handle it?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eHold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I know this is the right window?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check the part number on the old window's packaging or your parts list, or measure the diameter and thickness. They must match the size shown.\"}}, {\"@type\": \"Question\", \"name\": \"Is it a genuine part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same window in each. The 10 pack has the lowest price per window.\"}}, {\"@type\": \"Question\", \"name\": \"How should I handle it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical alcohol.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67557099700524,"sku":"SPM-LAS-2143-P1","price":32.35,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67557099733292,"sku":"SPM-LAS-2143-P5","price":149.65,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67557099766060,"sku":"SPM-LAS-2143-P10","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/spm_0_618c2596-ec27-4615-b0b5-3e840db7b6c9.jpg?v=1790912652"},{"product_id":"boci-y-z-c0034-aftermarket-ceramic-nozzle-holder-d41-x-h34-mm-m11","title":"BOCI Y.Z.C0034 Aftermarket Ceramic Nozzle Holder, D41 x H34 mm, M11","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eAftermarket ceramic nozzle holder for BOCI (Bochu) 2D fiber laser cutting heads. Replaces BOCI Y.Z.C0034, the white D41 ceramic body with the M11 x 0.75 nozzle thread.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eThe ceramic sits at the bottom of the head between the nozzle connector and the nozzle. It insulates the nozzle so the capacitive height sensor can read the gap to the sheet, and it is the part designed to break first in a collision. It is 41 mm across the top flange and 34 mm high, with a stainless thread insert for M11 x 0.75 nozzles.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eIt fits the BOCI BLT310, the BLT4 series (BLT421, BLT441, BLT461, BLT481) and the BLT6 series heads that use the D41 ceramic. Sold in packs of 1, 5 or 10.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eBOCI Y.Z.C0034 (C0034)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eTop Diameter\u003c\/td\u003e\n\u003ctd\u003e41 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e34 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eNozzle Thread\u003c\/td\u003e\n\u003ctd\u003eM11 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eTechnical ceramic with stainless steel thread insert\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eUse\u003c\/td\u003e\n\u003ctd\u003e2D sheet cutting heads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePack Options\u003c\/td\u003e\n\u003ctd\u003e1 pack, 5 pack, 10 pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eStat. HS-Code\u003c\/td\u003e\n\u003ctd\u003e846693\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eBOCI cutting heads\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt310-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT310\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt421-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT421\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt441-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT441\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt461-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT461\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt481-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT481\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt642h-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT642H\u003c\/a\u003e\u003ca class=\"spm-chip\" href=\"\/de\/collections\/boci-blt6102h-laser-head-parts\" style=\"text-decoration:none\"\u003eBLT6102H\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eBOCI 2D cutting heads with the D41 ceramic, as listed by BOCI parts suppliers for Y.Z.C0034. The black D41 ceramic (DY.C.A0005AA) is a different part.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eFind Your Size by Part Number\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBOCI Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eD41 x H34 mm, M11\u003c\/td\u003e\n\u003ctd\u003eD41 x H34 mm, M11\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eY.Z.C0034\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-LAS-2242)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eBLT310, BLT421, BLT441, BLT461, BLT481, BLT642H, BLT6102H\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eAfter a head collision\u003c\/strong\u003e\u003cbr\u003eA crash into a tipped up part usually breaks the ceramic first, which protects the rest of the head. A spare on the shelf gets the machine cutting again within minutes.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eHeight sensing faults\u003c\/strong\u003e\u003cbr\u003eA cracked ceramic, a loose thread or a burned contact pin upsets the capacitive height control, so the head hunts, stops with a sensor alarm or touches the sheet. Replace the ceramic before chasing the sensor.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eNozzle will not centre or sit square\u003c\/strong\u003e\u003cbr\u003eA worn or damaged thread in the ceramic lets the nozzle sit off centre, which shows as uneven cut quality in different directions.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003ePlanned maintenance\u003c\/strong\u003e\u003cbr\u003eCheck the ceramic at every nozzle change and replace it when it is chipped, cracked, discoloured or loose.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eeBay, aftermarket seller\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 16.59\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e4 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eCloudray\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 27.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e4 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 13.27\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 13.27 is 20% to 51% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 class=\"spm-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs this the black D41 ceramic?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. This is the white D41 ceramic, BOCI Y.Z.C0034. BOCI also makes a black D41 ceramic, DY.C.A0005AA, with a wider lower body. Check the colour and number of the ceramic you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eIs this a genuine BOCI part?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eNo. It is an aftermarket ceramic made to the same size and thread. It is not made by or affiliated with BOCI (Bochu); the BOCI part number is shown only so you can match the part you are replacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003e1 pack, 5 pack or 10 pack?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eIt is the same ceramic in each. The 10 pack has the lowest price per piece and suits shops that crash a head now and then or run several machines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eDoes it need calibrating after fitting?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eYes. After changing the ceramic, fit the nozzle, run the capacitive height sensor calibration on the controller and check the nozzle centring before cutting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:22px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"margin:0 0 8px;font-size:15px;font-weight:700\"\u003eDo you ship worldwide?\u003c\/h4\u003e\n\u003cp style=\"margin:0;font-size:14px;line-height:1.7;color:#333\"\u003eYes. Shipping options and costs for your country are shown at checkout, and every order is covered by our \u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e and \u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003eprice beat guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/de\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/de\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this the black D41 ceramic?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This is the white D41 ceramic, BOCI Y.Z.C0034. BOCI also makes a black D41 ceramic, DY.C.A0005AA, with a wider lower body. Check the colour and number of the ceramic you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a genuine BOCI part?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket ceramic made to the same size and thread. It is not made by or affiliated with BOCI (Bochu); the BOCI part number is shown only so you can match the part you are replacing.\"}}, {\"@type\": \"Question\", \"name\": \"1 pack, 5 pack or 10 pack?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is the same ceramic in each. The 10 pack has the lowest price per piece and suits shops that crash a head now and then or run several machines.\"}}, {\"@type\": \"Question\", \"name\": \"Does it need calibrating after fitting?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. After changing the ceramic, fit the nozzle, run the capacitive height sensor calibration on the controller and check the nozzle centring before cutting.\"}}, {\"@type\": \"Question\", \"name\": \"Do you ship worldwide?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Shipping options and costs for your country are shown at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"1 Pack","offer_id":67563662475564,"sku":"SPM-LAS-2242-P1","price":13.27,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":67563662508332,"sku":"SPM-LAS-2242-P5","price":64.36,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":67563662541100,"sku":"SPM-LAS-2242-P10","price":126.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/d41_1.jpg?v=1791080341"}],"url":"https:\/\/sparepartmart.co\/de\/collections\/boci-blt461-laser-head-parts.oembed","provider":"Spare Part Mart","version":"1.0","type":"link"}