1-1/2" deep, 4" square drawn junction boxes with vertical wood spike brackets and (6) 1/2” & (3) 3/4” side knockouts and (3) 1/2” & (2) 3/4” bottom knockouts are used when 4” square boxes must be mounted directly to wood studs. They have Chicago plenum air tight knockouts and bracket for wooden studs. Square boxes are used to bring power to a number of electrical devices when multiple conductor runs are split in two or more directions. Garvin Industries’ 4” square boxes with attached brackets allow a quick easy installation and keep the boxes upright for an effort less conduit connection.