Fasco Blower Wheel, Single Inlet, 4-1732 Inch Wheel Dia, 1-14 Inch Wheel Width, 516 Inch Bore, Steel Wheel, CW, 6300 Rpm, Galvanized Rotation viewed side opposite hub Standard Approvals: UL Listed, CSA Certified Application: Condensers, Draft boosters, Flue exhaust, Furnaces and Small Appliances