H.E. Williams Low-Profile Wrap, Narrow, Series: 17 Series, 120 to 277 VAC, T5/T8 Fluorescent Lamp, 32 W Lamp, 2 Lamps, 82.7 Lumens/W Light Output, Electronic Ballast, Clear Acrylic Prismatic Diffuser Lens, Surface/Suspended Mounting, 20 ga Die Formed Cold Rolled Steel Housing Material, White Polyester Powder Coated Housing Finish, 4 ft L x 10-3/4 in W x 3-1/16 in H Dimensions,