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 26 in Base Width 26 in Base Shape Square Maximum Static Pressure 2 3/4 in wc Maximum Airflow 1 592 cfm Minimum Airflow 642 cfm Maximum Motor Horsepower 3/4 hp Minimum Motor Horsepower 1/4 hp Maximum Motor Speed 2 110 RPM Minimum Motor Speed 1 465 RPM Assembly Unassembled