3 in. x 2 in., 3-1/2 in. deep. Gangable switch boxes offer the option of constructing a box to hold two or more devices. Includes “TS” side-mount bracket with gauging tabs and recessed nailing spurs. L clamps provided for non-metallic sheathed cable (NMSC). Supplied with seven 1/2 in. knockouts. 18 cu. in. capacity. Acceptable for use in 2-hour fire rated walls.