WELDED TYPE; STEEL MATERIAL; 4 INCH; 4 INCH; 1-1/2 INCH; UL APPROVAL; 50 STANDARD PACKAGE; 21 CU INCH CAPACITY; (1) 1/2 INCH BOTTOM, (6) 1/2 INCH SIDE KNOCKOUT SIZE; 11 KNOCKOUT(S); (1) BOTTOM, (10) SIDE KNOCKOUT LOCATION