Jabsco/PAR Flangemount Blowers Safe, efficient and high volume evacuation of hazardous vapors on vessels with gasoline engines. These blowers are constructed of a tough reinforced plastic housing and one-piece balanced rotor for maximum corrosion resistance in marine environments. Generally mounted with the discharge port fastened directly to a flat external surface to minimize required ducting. The inlet port can then be connected with duct hose to the area requiring ventilation. 250 CFM Current: 24 VDC, 5.3 Amps Port Sizes: 4" Inlet, 3-5/8" Outlet Dimensions: 9" H x 8-3/4" W x 8-3/4" L.