For entrances, stairwells, corridors and other pedestrian areas. Construction: Cast aluminum backplate. Gasketing between backplate and front cover prevents the entry of water and contaminants. External hardware includes phillips head and tamper-proof hex-head fasteners. Finish: Dark bronze (DDB) or white (DWH) front cover available for all wattages. Optical system: Front cover/refractor is injection-molded, one-piece, UV-stabilized polycarbonate. The optical system is sealed and gasketed to inhibit the entrance of outside contaminants. Electrical system: 35W-70W HPS and 50W MH use 120V normal power factor. Porcelain, medium-base socket with copper alloy nickel-plated screw shell and center contact. UL listed 660W, 600V, 4KV pulse rated. Medium-base lamp included with the fixture. Installation: Units are for wall mounting and include two 3/4 knockouts for routing electrical conduit. Listing: UL listed for wet locations. Listed and labeled to comply with Canadian Standards.