146 OCT BOX, 4X4X1-1/2 W/CABLE CLAMP | 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. 1-1/2 in deep, 15.5 cu-in capacity. 50 lb maximum recommended static load. Not designed for ceiling fan support. Acceptable for use in 2 hrs fire rated walls. UL listed.