4-11/16" Square Extension Ring, 2-1/8" Deep, Welded, Metallic By Steel City 73171-1/2-3/4

4-11/16 Inch Square Extension Ring, Welded, Metallic. Depth: 2-1/8 Inch, Side Knockouts: (8) 1/2 and (4) 3/4 Inch, Cubic Inches: 42

• Knockout Diameter: 1/2 in
• Knockout Diameter: 3/4 in
• Mounting: Device
• Material: Steel
• Depth: 2 1/8 in
• Cubic Inches: 42 in³
• Number of Knockouts: 6
• Knockouts: Yes