1-1/2" deep, 4" square welded junction boxes with flush mount brackets and (9) 1/2" side brackets and (2) 1/2" & (2) 3/4" bottom knockouts are used when 4” square boxes must be mounted directly to wood or metal studs. Square boxes are used to bring power to a number of electrical devices where multiple conductor runs are split in two or more directions. Garvin Industries’ 4” square boxes with attached brackets allow a quick easy installation on structural members and keep the boxes upright for an easy and solid conduit connection.