Two Piece, die cast aluminum housing. Front and back secured together by two hinges and two screws. ½” tapped holes are supplied for securing connections and photocell. The Diffuser is .083 thick glass or injection molded high impact polycarbonate with interior and exterior prismatic surfaces which allows for minimum glare and maximum light distribution. Diffuser secured to housing by steel clips with continuous line of silicon gasket. The reflector is .063” thick aluminum. Secures to housing by means of screws.