For entrances, stairwells, corridors and other pedestrian areas. | Cast aluminum backplate. Gasketing between backplate and front cover preventsthe entry of water and contaminants. External hardware includesphillips head and tamper-proof hex-head fasteners. | Front cover/refractor is injection-molded, one-piece, UV-stabilized polycarbonate.The optical system is sealed and gasketed to inhibit the entrance ofoutside contaminants | Units are for wall mounting and include two 3/4" knockouts for routing electricalconduit