Upblast Ventilator Application Foundries Industrial and Commercial Buildings Laboratories Manufacturing Facilities Non-Tempered Kitchen Make-Up Air Restaurants Schools Drive Type Belt Drive Wheel Diameter 18 1/2 in Base Diameter Not Applicable Base Length 30 in Base Width 30 in Base Shape Square Maximum Static Pressure 3 in wc Maximum Airflow 4 613 cfm Minimum Airflow 1 688 cfm Maximum Motor Horsepower Not Applicable Minimum Motor Horsepower 1/4 hp