The Jackson Safety Face Shield Window is a replacement part for Quad™ 500 Series face shields. Extra-large molded polycarbonate window measuring 8.58" x 8.24" x .060" features Jackson’s premium Sta-Clear® anti-fog coating. When used with Quad™ 500 face shield system, the molded window is completely framed on the sides and chin and features an extra-large crown. Detents that lock in both the up and down positions provide added safety. This replacement window fits all Quad™ 500 Series face shields and meets or exceeds ANSI Z87.1+ high impact standards when used with Quad™ 500 face shields.Features DESIGN - Jackson Safety Face Shield Window features an extra-large molded polycarbonate clear window measuring 8.58" x 8.24" x .060" with Jackson’s premium Sta-Clear® anti-fog coating FEATURES - When used with Quad™ 500 face shield system, the window is completely framed on the sides and chin and has an extra-large crown. Detents that lock in both the up and down positions provide added safety APPLICATION - Maximum above-the-neck face protection during cutting and grinding operations and for general multi-purpose use COMPATIBILITY - Fits all Quad™ 500 Series face shields