With non-metallic sheathed cable clamps. Four 1/2 in conduit knockouts and four cable knockouts, (sides). One 1/2 in conduit knockouts, (bottom). Octagon boxes can be used in the installation of ceiling or wall lighting fixtures or as a junction box. Not designed for ceiling fan support. UL 514-A listed, File E195978, acceptable for use in 2-hour fire rated walls.