4 Square Box Drawn 1-1/2 Depth 1/2 and 3/4 Knockouts Steel By Appleton 4S34DR

4 Inch Square Box Drawn 1-1/2 Inch Depth Side Knockouts: (8) 3/4 Inch Bottom Knockouts: (2) 1/2 Inch (2) 3/4 Inch 21 Cubic Inches SteelKnockout Diameter: 1/2 inKnockout Diameter: 3/4 inMounting: Screw OnMaterial: SteelMounting: Nail OnDepth: 1 1/2 inCubic Inches: 21 inNumber of Knockouts: 12Knockouts: Yes