Blower Wheel Type Forward-Curved Drive Type Belt Drive Includes Drive Package No Assembly Unassembled Wheel Diameter 12 7/8 in Minimum Airflow 5 500 cfm Maximum Airflow 6 500 cfm Maximum Static Pressure 2 1/2 in wc Maximum Inlet Air Temperature 250 Degrees F Shaft Diameter 1 in Bearing Type Ball Wheel Material Steel Housing Material Steel Wheel Width 12 3/4 in Number of Inlets 2 Inlet Diameter 10 3/8 in Outlet Shape Rectangular Outlet Height 13 3/8 in Outlet Width 15 5/8 in