Hubbell-Raco Masonry Box, Type: Block-Loc™, 4-Gang, Welded, 3-1/2" Depth, Steel

Masonry Box, Type: Block-Loc™, 4-Gang, Welded, 3-1/2 Inch Depth, Gangable, Side Knockouts: (4) 1/2 and 3/4 Inch Concentric, End Knockouts: (16) 1/2 and 3/4 Inch Concentric, Bottom Knockouts: (4) 1/2 and 3/4 Inch Concentric, Material: Steel/Galvanized. Integral Brackets Securely Hold Power and Data Outlets to Concrete Block from Front and Back in Masonry Walls, Even in Irregular Cut Openings.