Hubbell-Raco 965 3-1/2-Inch Deep 134.8 Cubic Inch 6-Gang Nongangable Masonry Box Rectangular shape neatly fits square cuts in concrete block, 3-3/4 in. X 11-1/32 in Device ears are formed inside the box 134. 8 cubic in. Capacity For use in 6 in. or 8 in. block walls