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 13 1/2 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 2 256 cfm Minimum Airflow 1 003 cfm Maximum Motor Horsepower 1/4 hp Minimum Motor Horsepower 1/2 hp