16, 14 or 12 ga steel or plated steelUnique keyhole screw slots in the coverOptional flush-mounted door frame availableOptional flush coversFlat, removable covers fastened with plated steel screwsProvision for groundingMounting holes on back of boxFor flush installations, order flush covers and door frames separatelyWithout knockout
nVent HOFFMAN ASE12X6X4NK A90P1 Pull Box, 12 in L x 6 in W x 4 in D, Screw Cover, NEMA 1/IP30 NEMA Rating, Steel