RINGLESS TYPE; 17-3/4 INCH W X 6-1/2 INCH D X 34-1/8 INCH H SIZE; 3/8 INCH-16 TPI STUD (LINE/LOAD) WIRE SIZE; POWDER COATED G90 GALVANIZED STEEL ENCLOSURE MATERIAL; UL APPROVAL; 600 VAC AT 60 HZ VOLTAGE RATING; SURFACE MOUNTING; NEMA 3R ENCLOSURE; 320 AMPERE CURRENT RATING; 1-PHASE 3-WIRE CIRCUIT CONFIGURATION; OVERHEAD/UNDERGROUND SERVICE TYPE; LARGE CLOSING PLATE HUB TYPE; (1) (1/2 INCH - 3/4 INCH - 1 INCH), (3) (2 INCH - 2-1/2 INCH - 3 INCH), (2) (2 INCH - 2-1/2 INCH - 3 INCH - 3-1/2 INCH - 4 INCH) CONCENTRIC KNOCKOUT, (1) 1/4 INCH SOLID KNOCKOUT KNOCKOUT(S); 4 JAW(S); LEVER BYPASS SWITCH; U2448 MODEL