20.5 Cu. In. 3.5″ dia. round fixture support box for use with nonmetallic sheathed cable – Machine tapped fixture holes, ground strap, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures – New work residential construction 2 HR fire resistive walls and ceilings (50 lbs. fixture support) – Fiberglass reinforced polyester – thermoset box with galvanized steel adjustable bar hanger – Size: Depth=2 15/16″, Dia=3 1/2″ – Mount with Adjustable bar hanger – 16″ to 24″ on center joist application – Speed Klamps™ factory installed

Special Features:Machine tapped fixture holes, ground strap, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures