With non-metallic sheathed cable clamps. Two 1/2 in conduit knockouts and four cable knockouts, (sides). One 1/2 in conduit knockout, (bottom). Used in the installation of ceiling or wall lighting fixtures or as a junction box. 15.5 cubic inch capicty. 50 pound maximum recommended static load. Not designed for ceiling fan support. UL 514-A listed, File E195978, acceptable for use in 2-hour fire rated walls. UPC bar code.