Centrifugal Upblast Roof Exhaust Fan Application Industrial and Commercial Buildings Restaurants Schools Drive Type Belt Drive Wheel Diameter 14 3/4 in Base Diameter Not Applicable Base Length 22 in Base Width 22 in Base Shape Square Maximum Static Pressure 1 3/4 in wc Maximum Airflow 3 066 cfm Minimum Airflow 998 cfm Maximum Motor Horsepower 1 hp Minimum Motor Horsepower 1/4 hp Maximum Motor Speed 1 725 RPM Minimum Motor Speed 1 105 RPM Assembly Unassembled