Attwood Turbo In-Line Bilge Blowers Patented in-line design provides powerful, reliable ventilation for engine compartments, bilges and heads. Mounting feet allow easy installation in confined spaces.Includes two tie straps. Caulked copper wire leads. Specifications: Voltage: 12 VDC Hose 4" Capacity 220 CFM Amps 3.5 amps Height 4-1/2" Width 6-1/16" Length 5-1/32"