Gangable 3 in x 2 in switch box, offers the option of constructing a box to hold two or more devices. Beveled corners prevent the clamp screws from protruding into the back wall. With non-metallic sheathed cable clamps. Acceptable for use in 2 hrs fire rated walls. Four cable knockouts (end). Two 1/2 in conduit knockouts (end). 1/2 in conduit knockouts (bottom). With leveling bumps. No plaster ears, not suitable for old work. 2-1/4 in D. 10.5 cu-in. UL listed.