12.0 Cu. In. 4" dia. round fixture support box with 7" square mounting flange for use with nonmetallic sheathed cable - Machine tapped fixture holes, "pop-in" cable clamp, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures - Residential home - exterior light fixture electrical box (15 lb fixtuer rating) for use with nonmetallic sheathed cable - Fiberglass reinforced polyester - thermoset box - Size: Box - Depth=1 1/4", Dia=4", flange - 7" x 7" - Mount with Back side mount with fasteners