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Technical Description:Square Box Extension Ring Type; Pre-Galvanized Welded Steel Material; 4 Inch; 4 Inch; 2-1/8 Inch; UL 514A Approval; 25 Per Carton Standard Package; 30.3 Cu Inch Capacity
UPC: 78599116840
Part Number: 53171-1/2&3/4
Manufacturer: STEELCITY