Fibre-Metal® FM-71 is a lightweight, dielectric faceshield protective cap mounting bracket that mounts on the front peak of the hard hat. Dual channel mounting system 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 and out of the way when not needed. The locked channels form a positive seal to keep debris from filtering between the hat and faceshield. Molded from strong, heat resistant Noryl, model FM-71 is ideal for extended outdoor use. Incorporates Fibre-Metal HIGH PERFORMANCE wide-vision windows.