4 Inch Square Box, Welded, Metallic, 1-1/2 Inch Deep, Side Knockouts: (8) 1/2 Inch with (4) Eccentric, Bottom Knockouts: (2) 1/2 Inch Eccentric, Cubic Inches: 21.0
- Knockout Diameter: 1/2 in
- Mounting: Screw On
- Material: Steel
- Mounting: Nail On
- Depth: 1 1/2 in
- Cubic Inches: 21 in³