BOCI Upper Protective Window Cartridge (D25.4T4-4)
https://www.fabtechshop.com/shop/dp-v-p0013aa-boci-upper-protective-window-cartridge-d25-4t4-4-3159
https://www.fabtechshop.com/web/image/product.template/3159/image_1920?unique=3c16f74
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This product is compatible with the following laser head models:
- BLT642H-200
- BLT442P-250
- BLT520H-200
- BLT520H-250
- BLT540H-200
- BLT540H-250