Blower Wheel Product Type Blower Wheel Wheel Type Forward-Curved Number of Inlets 1 Wheel Diameter 9 1/8 in Wheel Width 4 1/2 in Bore Diameter 5/8 in Wheel Material Aluminum/Steel Rotation CCW Closed End Hub Type Concave Wheel Hub Position Inside Wheel Construction Tabbed Maximum Speed 1 600 RPM Drive Type Direct Drive Includes Set Screws Yes Blade Shape Concave Wheel Material Finish Aluminum Plated