The COMPAX Series presents a unique choice in specifier grade surface mounted ventilators. Elegant styling, low profile, strong performance, quietness, and dependability provide the specifier/designer with the highest qualities of any engineered product. Features a swing-out access with pop-out hinges which enables easy cleaning and removal of the motor and wheel assembly. Airflow ranges from 0 CFM to 250 CFM. The fan casing is constructed of zinc coated galvanized sheet metal.