1-1/2 in D, 4 sq-in welded Junction Box with flat vertical brackets and clamps for flexible metal conduits are installed in walls or ceilings for lighting fixtures, switches, receptacles or other outlet devices where flexible metal conduits are used. 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 sq-in boxes come with built in clamps for flexible metal conduits to speed up installation and save connector costs. GARVIN®, 52151-FBX, Junction Box, (3) Side, (1) Bottom Knockouts, (2) 1/2 ,1/2 to 3/4 Side, (1) 1/2 Bottom in Knockout, Square Shape, Vertical Mounting, Steel, Galvanized, 4 in H x 4 in W x 1-1/2 in D Dimensions