Four 1/2" conduit knockouts (sides). Four 1/2" conduit knockouts (bottom). No bracket. Used in the installation of ceiling or wall lighting fixtures or as a junction box. 1-1/2" deep, 15.5 cubic inch capacity. Not designed for ceiling fan support. 50 pound maximum recommended static load. Acceptable for use in 2-hour fire rated walls. UL Listed. UPC bar code.