Protection Windows (All Sizes)

King Kogs Verified independent store

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Every protection window on one page. Choose your exact size from the dropdown and we'll match you to the right JGS1 fused-silica window for your head and power. We stock only the h ighest-purity fused silica — quartz sourced from North America and Japan — with premium AR coatings that extend consumable life and protect your laser. Specifications Sizes 20 mm – 55 mm diameter (select in dropdown) Material JGS1 high-purity fused silica Coating Anti-reflective (AR) Power range 6 kW – 30 kW Key Features ✓ Highest-purity fused silica for low absorption and long life ✓ Premium AR coating reduces stray reflection and protects the head ✓ Exceptional transmittance and low thermal expansion ✓ Covers 6 kW to 30 kW systems ✓ One easy listing — pick your size, add to cart Compatibility: Precitec, Han's, WSX, Klinge, Ospri and Raytools Every unit is inspected and quality-assured prior to shipment. Industrial Price Guarantee: Found a lower quote? We'll match it and take an extra 5% off. Free standard shipping on small-parts & consumables orders over $200 (bulky items quoted separately). 10% off your first consumables order with email sign-up. Show more