Blower Wheel Product Type Centrifugal Blower Wheel Wheel Type Forward-Curved Number of Inlets 2 Wheel Diameter 11 in Wheel Width 10 11/16 in Bore Diameter 1/2 in Wheel Material Steel Rotation CW Closed End Hub Type Convex Wheel Hub Position Off-Center Wheel Construction Riveted Maximum Speed 1 500 RPM Drive Type Direct Drive Number of Blades 48 Blade Width 1 in Includes Set Screws Yes Blade Shape Concave Compatible with Grainger Part Number 4XLE2 Compatible with Brand Dayton