6900003260 - FS25.4X4.0 - Dia 25.4mm ET 4mm Fiber Protective Window - Fused Quarts - Suitable for Trumpf (R) Fiber Laser 99.96%,AR/AR@10 30-1090nm Boost Laser Efficiency with Fiber Laser Protective Windows. Safeguard Optics & Ensure Precision for 1030-1090 nm Fiber Lasers. Shop Now for Enhanced Laser Performance! Best Fiber Laser Accessories. Reliable Laser Protection. Precision Optics. Shop Online. APC PN: FS25.4x4.0 Suitable for Trumpf (R) and Mitsubishi (R) Fiber Laser Alternative PN: LLM011-2540S, 633481-117 Reference TRUMPF PN: 6900003260 Size: 25.4mm x 4.0mm Description: Broadband AR 1025 - 1090 nm Fiber Laser Protective 99.96%,AR/AR@10 30-1090nm Disclaimer: All parts advertised for sale are made by or for American Photonics. Amada®, Bystronic®, Cincinnati®, Mazak®, Mitsubishi®, Laserlab®, Laserdyne Prima®, Precitec®, Strippit®, Trumpf® and any other trademarks not owned by APC are registered trademarks of the respective owners with which they are associated. APC is an independent site and company that is not affiliated with above-named manufacturers and the use of the names, trademarks and part numbers is for reference, identification and compatibility purposes only.