Columbia Lighting Enclosed Gasketed Fixture, Non-Dimmable, Series: XEM, 120 to 277 VAC, T8 Lamp, Bi-Pin Lamp Base, 4 Lamps, 50000 hr Average Life, White Light, 4000 K Color Temperature, 80 CRI, Instant Start Electronic Ballast, Clear Ribbed Acrylic/Impact-Resistant Lens, 2700 Lumens, IP65/IP67 Enclosure, Surface Mounting, Fiberglass Housing Material, Baked Enamel Housing Finish, 4 in L x 6-7/8 in W x 5-5/8 in H Dimensions