Gangable 3 in x 2 in switch box, offers the option of constructing a box to hold two or more devices. Plaster ears allow the box to be used in old work applications. Acceptable for use in 2-hour fire rated walls. Four 1/2 in conduit knockout (sides). Two 1/2 in conduit knockout (end). Two 1/2 in conduit knockouts (bottom). 2 in deep - 10.0 cubic inches. UL Listed.