Centrifugal Roof Supply Fan Mounting Location Roof Wheel Diameter 15 1/2 in Base Diameter Not Applicable Base Length 34 1/2 in Base Shape Square Base Width 34 1/2 in Maximum Airflow 5 284 cfm Minimum Airflow 1 065 cfm Maximum Motor Horsepower 2 hp Minimum Motor Horsepower 1/2 hp Minimum Motor Speed 535 RPM Maximum Motor Speed 820 RPM Maximum Static Pressure 1 in wc Number of Filters 2 Filter Housing Depth 29 1/4 in Filter Housing Height 27 1/2 in Filter Housing Width 28 1/8 in