Fibre-Metal Clear Molded Extended View Face Shield Window with a lens size of 8" X 16 1/2" X 0.06" is made of propionate and is used for FM400 and FM500 dual crown high Performancefaceshield. Lightweight dimensionally stable window is designed especially for use with CG3400 and CG3400CL chin guards and it is resistant towards distortion impact and scratch. Dual crown visor is top quality injection molded, preformed extended wraparound. Window is SEI certified and meets current ANSI standards.