pollutants.Durable galvanized steel casing

by minimizing air conditioned / heated air losses through opened doorways or any openings, sleek attractive and decorative low profile MASF series effectively repels flying insects, dust and pollutants.Durable galvanized steel casing retains its attractive appearance throughout its life use with directional air flow adjustable louver, and convenient two speeds hi-lo fan operation controlled by a unit surface