With non-metallic sheathed cable clamps. Two 1/2" conduit knockouts and four cable knockouts, (sides). One 1/2" conduitknockout, (bottom). Can be used in the installation of ceiling or wall lighting fixtures or as a junction box. Not designed for ceiling fan support. 50 pound maximum recommended static load. 2-1/8" deep, 21.5 cubic inch capacity. UL Listed.