Metalux, WN-432A-UNV-EB81-U, Commercial Surface Wraparound, Series: WN Series, 120/277 V AC, 128 W Fixture, 0.386 A, T8 Lamp, 32 W Lamp, 4 Lamps, Instant Start Electronic Ballast, Acrylic Prismatic Glass Lens, 3100 Lumens, Surface Mounting, Steel Housing Material, Baked White Enamel Housing Finish, 50 in L x 13-1/8 in W x 2-3/4 in H Dimensions