CONTINUOUS HEAVY DUTY BLOWERS have a minimum life of 10,000 hours, making them ideal for general engine room or genset enclosure ventilation. They are also well suited for general ventilation of head or galley areas and any application that requires regular extended operation. Rated at 250 CFM . Mount Flange Hose 4" Volts 12 Size 9-3/8" L x 8-3/4" W x 9" H