RACO, 653, Handy Box Extension Ring, 1-Outlet Welded, 1 Outlets, 1 Gangs, 6 Knockouts, 1/2 in Knockout, Conduit Knockout Cable Entry, Squared Shape, Surface Mounting, 11.5 cu-in Capacity, Steel, Pre-Galvanized, Silver, 4 in H x 2.13 in W x 1.5 in D Dimensions