3″ White. Water Resistant. The first vane axial-flow fan bilge blowers designed using aerospace technology to maximize performance. Patented in-line design – provides ventilation for engine compartments, galleys, bilges and heads. Nickel-plated motor can for corrosion resistance. Stiffening ribs to reduce housing distortion. Five-blade fan maximize airflow and efficiency. Tabs in intake and exhaust hold ventilation hose/clamp firmly in place. Built-in mounting feet allow easy vertical or horizontal install. All are CE certified, 16-gauge tinned and caulked copper wire leads. 12 volt.