Offers safe, efficient and have high volume evacuation of hazardous vapors on vessels equipped with gasoline powered engines. Satisfy requirements of USCG regulation Title 46, Chapter I, part 183, subpart K for marine ventilation when properly installed and used. BIA type accepted. Also exhausts warm air from galleys and engine rooms, ventilating steam or odors from heads and general marine air circulation. Constructed of tough reinforced plastic housing and one-piece balanced rotor for maximum corrosion resistance. Flange mount blowers are generally mounted with discharge port fastened directly to flat external surface minimizing required ducting. Inlet port can be connected with duct hose to area requiring ventilation. Quality marine product. Limited warranty.