REVERSOMATIC A-Series Direct Drive Wall Exhaust Fans are ideal for the rapid removal of smoke, steam, heat, fumes, and general ventilation in commercial and industrial buildings. Designed for use at static pressures below .25” W.G., these fans feature die-stamped, die-formed blades for optimal balance, and are equipped with totally enclosed, non-overloading motors that offer one, two, or variable speeds. With self-acting extruded aluminum blade shutters and an attractive enamel finish, these fans can be installed both vertically or horizontally and include durable steel panel frames with mounting flanges and Venturi orifice for efficient airflow.