Lensed Troffer, U6T8 Bulb Shape, 23-15/16 In Length, 23-3/4 In Width, 3-1/4 In Height, 277 V, 32 W, Magnetic Ballast, Electronic, 2850 LM Brightness (Lumens), 2G11 Base, 2 Lamps, 1 Ballasts, Cold Rolled Steel Housing Material, Baked White Enamel, Troffer Mount, 12.1999 LB/Ea