For conduit. 3 in x 2 in switch box. No bracket, adjustable plaster ears allow box to be used in old work applications. 14 cu-in capacity, 2-3/4 in deep, four 1/2 in side knockouts, two 1/2 in bottom knockouts and two 1/2 in end knockouts. Acceptable for use in 2 hrs rated fire walls. UL listed.