Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 16 1/2 in Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 1 in Bearing Type Ball Wheel Material Steel Housing Material Steel Number of Inlets 1 Inlet Diameter 17 7/8 in Outlet Shape Rectangular Outlet Height 17 3/4 in Outlet Width 13 in Outlet Diameter Not Applicable Minimum Motor Horsepower 5/16 hp Maximum Motor Horsepower 5 hp