108W 4 Feet T5HO Vaporlight 2 Lamp Waterproof Vapor Tight Wet Location Light Fixture 120V-277V The housing of the fixture is made from polyethelene Polycarbonate construction (Diffuser). Non-corrosive, heat and vandal resistant Diffuser made of clear impact resistant acrylic lens with linear prisms Lamp Type: 2 x F54 T5 HO (not Included) Dimensions: 50 1/2"x6 3/4"x3 1/2"