Safe, efficient and have high volume evacuation of hazardous vapors on vessels equipped with gasoline powered engines. Satisfies 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. Flexmount blowers have both inlet and outlet ports designed for slip-on flexible duct connections. With motor attached mounting bracket and are ideal when in-line installation of blower is preferred. May be rotated in bracket to permit installation with discharge port in any direction. Flangemount blowers are generally mounted with discharge port fastened directly to flat external surface minimizing required ducting. With mounting flange on discharge port. Inlet port can be connected with duct hose to area requiring ventilation. Hose 4" CFM 250 Volts 12 Amps 12 Size 8 3/4" L x 8 3/4" W x 9" H