SWC 52171-1RED 4Sq Jnct bx Rd 2-1/8

2-1/8 in Deep 4 in square welded boxes with (8) 1 in side knockouts and (2) 1/2 in & (2) 3/4 in bottom knockouts are installed in walls or ceilings for lighting fixtures switches receptacles or other outlet devices. These boxes are painted red to distinguish them as fire alarm circuits. Square boxes are used to bring power to a number of electrical devices where multiple conductor runs are split in two or more directions. The raised ground in the bottom ensures reliable box grounding.