Blower Wheel, Product Type Blower Part, Wheel Type Forward-Curved, Number of Inlets 1, Wheel Diameter 8 1/4 in, Wheel Width 4 in, Bore Diameter 1/2 in, Wheel Material Steel, Rotation CW Hub End, Hub Type Convex, Wheel Hub Position Center, Wheel Construction Tabbed, Maximum Speed 2,100 RPM, Drive Type Direct Drive, Number of Blades 40, Blade Width 0.7 in, Includes Set Screws Yes, Includes Not Applicable, Blade Shape Concave, Compatible with Grainger Part Number 1TDT9, 1TDT4