Fasco Blower Wheel, Single Inlet, 5-34 Inch Wheel Diameter, 1-12 Inch Wheel Width, 516 Inch Bore, Steel Wheel, CCW, 3600 Rpm, Galvanized Rotation viewed side opposite hub Hubs may be bored to larger size if necessary Standard Approvals: CSA Certified, UL Listed Application: Condensers, Draft Boosters, Flue Exhaust, Small Appliances and Furnaces