Four cable knockouts (end). Two 1/2" conduit knockouts (end). One 1/2" conduit knockout (bottom). With non-metallic sheathed cable clamps. "TS" brackets for wood or metal studs. Gauging tabs and recessed nailing spur. Side mount. 3" x 2" x2-1/2" deep. 12.5 cubic inches. UL Listed.