SWC TBX-535 Msonry bx xtns Ring Fiv

3-1/2in deep five gang Extension Ring masonry boxes are used for mounting switches plugs outlets and other electronic and electrical devices in masonry brick and 4. block walls. Gangable masonry boxes offer installers the ability to add devices in the field. Garvin. extra deep design allows for deep devices numerous wires switches and other electronic and electrical devices.