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Home » Authors » Tom Gustafson, Hartzell Air Movement
Tom Gustafson was vice president of engineering at Hartzell Fan Inc., Piqua, Ohio. Hartzell Fan now operates as Hartzell Air Movement. The company can be reached at (800) 336-3267 or www.hartzellairmovement.com.
When one or more conditions change, the other conditions vary according to certain fan laws for an established fan size, system of ductwork and air density.
