One Gang Masonry Box, 3-1/2" Deep - Non-Gangable, W/ Conduit KO's

Masonry boxes are used as a junction box or to secure a wiring device in masonry block construction. 2-1/2" deep boxes are used in 4" block walls, 3-1/2" deep boxes are used in 6" or 8" block walls. Gangable masonry boxes allow installer to construct a box to hold multiple devices.