266991342,73171-1/2-3/4,AMERICAN ELECTRIC,THOMAS & BETTS STEEL CITY/KINDORF 73171 1/2 3/4 1/2 & 3/4 BOX EXT RING 42CUB STL SQUARE BOX EXTENSION RING 4-11/16SQ EXT STEEL CITY Replaced by ( ) Replaces ( ) Square Box Extension Ring - Steel Details: SQUARE BOX EXTENSION RING TYPE; PRE-GALVANIZED WELDED STEEL MATERIAL; 4-11/16 INCH; 4-11/16 INCH; 2-1/8 INCH; UL 514A APPROVAL; 20 PER CARTON STANDARD PACKAGE; 42 CU INCH CAPACITY; (4) 1/2 INCH CONDUIT SIDES, (2) 3/4 INCH CONDUIT SIDES, (4) 1/2 INCH CONDUIT ENDS, (2) 3/4 INCH CONDUIT ENDS KNOCKOUT SIZE; 12 KNOCKOUT(S); SERIES 73171 MODEL Approximate Standard Package In : Length: , Width: , Height: Commodity Code: 2710;,STL-CTY 73171-1/2-3/4 4-11/16SQ EXT,Crown Supply