Fibre-Metal Model FM70 Noryl Dielectric Cap Mounting Bracket molded from strong, heat resistant Noryl mounts on the front peak of the cap and is perfect for use in extended outdoor environments. Bracket features a dual channel mounting system which uses one channel to anchor the bracket to the cap while the other channel holds the window so it can lock into the work position and pivot up or out of the way when not required. The locked channels form a positive seal to keep debris from filtering between the cap and faceshield. Bracket for non-slotted hard caps includes Fibre-Metal high Performancewide-vision windows.