Centrifugal Upblast Exhaust Fan Application Foundries Industrial and Commercial Buildings Laboratories Manufacturing Facilities Non-Tempered Kitchen Make-Up Air Restaurants Schools Drive Type Belt Drive Wheel Diameter 11 3/8 in Base Diameter Not Applicable Base Length 22 in Base Width 22 in Base Shape Square Maximum Static Pressure 1 1/4 in wg Maximum Airflow 1 549 cfm Minimum Airflow 861 cfm Maximum Motor Horsepower 1/8 hp Minimum Motor Horsepower 1/4 hp