FS60x3 - Dia 60mm ET 3mm Fiber Protective Window 99.96%,AR/AR@10 30-1090nm APC PN: FS60X3 Reference PN: 9806000030 Size: 60mm x 3.0mm Description:AR 1064/1070 nm C.Code: AR4 Protective Windows: The contamination of the focusing lens is one of the main for poor performance and potential down time. The cutting head are very sensitive to any type of contamination. American Photonics has the best quality of protective windows to protect the focusing lens against contamination. Our protective window is a barrier (debris shield) between the lens and the metal sheet. To protect your investment Disclaimer: All parts advertised for sale are made by or for American Photonics. Amada(R), Bystronic(R), Cincinnati(R), Mazak(R), Mitsubishi(R), Laserlab(R), Laserdyne Prima(R), Precitec(R), Strippit(R), Trumpf(R) 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.