Centrifugal Downblast Roof Exhaust Fan, Drive Type Belt Drive, Assembly Unassembled, Mounting Location Roof, Wheel Diameter 21 1/2 in, Base Diameter Not Applicable, Base Length 30 in, Base Width 30 in, Base Shape Square, Minimum Airflow 2, 089 cfm, Maximum Airflow 6, 640 cfm, Maximum Motor Horsepower 2 hp, Minimum Motor Horsepower 1/4 hp, Minimum Motor Speed 600 RPM, Maximum Motor Speed 1, 200 RPM, Maximum Static Pressure 1 3/4 in wc, For High-Static Pressure Applications No. This item has been restricted from sale in the following state (s): []