Lithonia Lighting® Square-Basket Wraparound, Series: SB432, 120 to 277 VAC, T8 Fluorescent Lamp, 32 W Lamp, Bi-Pin Single Lamp Base, 4 Lamps, Instant Start Electronic Ballast, Acrylic Lens, Class P Insulation, Surface Mounting, Steel Housing Material, High Gloss Baked White Enamel Housing Finish, 15.6 in L x 4 in W x 49.7 in H Dimensions