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 19 in, Base Width 19 in, Base Shape Square, Maximum Static Pressure 1 1/2 in wg, Maximum Airflow 2,037 cfm, Minimum Airflow 968 cfm, Maximum Motor Horsepower 1/4 hp, Minimum Motor Horsepower 1/2 hp