BOCI Upper Protective Window Cartridge (D21.5T2-6)
https://www.fabtechshop.com/shop/dp-v-p0001aa-boci-upper-protective-window-cartridge-d21-5t2-6-3176
https://www.fabtechshop.com/web/image/product.template/3176/image_1920?unique=2592d60
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This product is compatible with the following laser head models:
- BLT461-200
- BLT461T-250
- BLT661H-200