SeaLux Marine In-Line Bilge Turbo Blower 12 Volt-3 inch dia. hose SeaLux In-Line Blowers provide ventilation for engine, compartments bilges, galleys and head closets Designed with wider stable base plate to prevent vibration and oval slates for aesthetics and ease of installation. Heavy duty Shaft seal for moister protection. Waterproof boot over motor to protect from water intrusion. Efficient high volume air flow and low current draw. Large barb for ease of duct connection.