RACO® Block-Loc® Masonry Box, Non-Gangable, 1 Outlets, 1 Gangs, 10 Knockouts, 1/2 in, 3/4 in Knockout, Conduit Cable Entry, Rectangle Shape, Wall Mounting, 22.5 cu-in Capacity, Steel, Electro-Galvanized, Gray, 3.547 in W x 3.5 in D x 3.797 in H Dimensions