Dedusting filter box is a kind of environments protection equipment of air filtration, purifying and fresh air pressure. Simple structure Manufacture conveniently Wide application Maintaining conveniently The internal exhaust fan kept the enough fresh air in the room to reach the target of purifying the air. It is mainly used in the air filter section of concentration ventilation and the central AC system. call us at : ++267-774-5306 Granbury, Texas, United States