SWC 52171-RED 4Sq JctBx Rd 2-1/8"D

2-1/8 in Deep 4 in square welded boxes with (8) 1/2 in & (4) 1/2 in-3/4 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.