Uplast Exhauster, Application Commercial Buildings, Factories, Offices, Warehouses, Drive Type Belt Drive, Wheel Diameter 21 1/4 in, Base Diameter Not Applicable, Base Length 33 1/8 in, Base Width 33 1/8 in, Base Shape Square, Maximum Static Pressure 2 1/4 in wc, Maximum Airflow 6,100 cfm, Minimum Airflow 2,900 cfm, Maximum Motor Horsepower 3 hp, Minimum Motor Horsepower 1/2 hp, Maximum Motor Speed 1,300 RPM, Minimum Motor Speed 1,300 RPM, Assembly Unassembled, Housing Material Aluminum