{"product_id":"27-9-x-4-1mm-fibre-laser-protective-window-raytools-fit","title":"27.9 x 4.1mm Fibre Laser Protective Window — Raytools Fit","description":"\u003cp\u003e\u003cstrong\u003eGenuine fused silica cover glass for Raytools BT and BM cutting heads.\u003c\/strong\u003e 27.9 mm diameter x 4.1 mm thick, built for continuous fibre laser cutting — real fused silica, not soda-lime glass.\u003c\/p\u003e\u003cp\u003eIt shields your focusing and collimating lenses from back-spatter and debris — cheap insurance against an expensive lens.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDiameter: 27.9 mm — also written 27.9*4.1, D27.9x4.1, D27.9T4.1 and FS27.9x4.1\u003c\/li\u003e\n\u003cli\u003eThickness: 4.1 mm\u003c\/li\u003e\n\u003cli\u003eMaterial: JGS1 fused silica, double-sided AR coated for 1064 nm\u003c\/li\u003e\n\u003cli\u003ePower rating: up to 10 kW\u003c\/li\u003e\n\u003cli\u003eTransmission: greater than 99.7%\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible cutting heads\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRaytools:\u003c\/strong\u003e BT210, BT210S, BT220RC, BT240, BT240S, BM109 and BM111.\u003c\/p\u003e\u003ch3\u003eRaytools part number\u003c\/h3\u003e\u003cp\u003eDirect replacement for Raytools 211LCG0037 (D27.9 x 4.1 cover glass).\u003c\/p\u003e\u003cp\u003eNot sure it fits your head? Send us your machine and head model and we'll confirm the exact window before you buy.\u003c\/p\u003e\u003cp\u003eShipped fast Australia-wide from our Brisbane workshop.\u003c\/p\u003e","brand":"DK Machine Tech","offers":[{"title":"1","offer_id":67643966390371,"sku":"PW0004","price":15.95,"currency_code":"AUD","in_stock":true},{"title":"10","offer_id":67643966423139,"sku":"PW0004-10","price":143.55,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/8508\/2723\/files\/ProtectiveWindow1_0ad3db51-be5c-4d74-bbfa-c0289cbb4093.png?v=1750125985","url":"https:\/\/dkmachinetech.com\/products\/27-9-x-4-1mm-fibre-laser-protective-window-raytools-fit","provider":"DK Machine Tech","version":"1.0","type":"link"}