Full Technical Description: Drawn Steel Material; 4 Inch; 4 Inch; 2-1/8 Inch; UL Approval; 25 Standard Package; 30.3 Cubic Inch Capacity; (3) 1/2 Inch Bottom, (2) 3/4 Inch Bottom, (8) 1/2 Inch Side, (4) 3/4 Inch Side Knockout Size; 17 Knockout(S); (5) Bottom, (12) Side Knockout Location; Application Conduit