Four 1/2" conduit knockouts (sides). Four cable knockouts (end). Two 1/2" conduit knockouts (end). One 1/2" conduit knockout (bottom). With non-metallic cable clamps in each end. 3" x 2" x 3-1/2" deep. 18.0 cubic inches. Adjustable plasterears allow box to be used in old work applications. Acceptable for use in 2-hour rated walls. UL Listed.