The new and improved Turbo 4000 Series II is quieter and has a re-engineered housing that resists deformation during installation and prevents blade to housing interference. Utilizing advanced blade design techniques has allowed these new blowers to match the air flow of existing in-line blowers at significantly reduced noise levels. Low current draw at 2.5 Amp. Individually boxed. Utilizing advanced fan blade design techniques, Attwood has developed a blower system that matches air flow of existing in-line blowers at a significantly reduced noise level. The first vane axial-flow fan bilge blowers designed using aerospace technology to maximize performance. It provides powerful system output at a low power input in a compact size. In-line design - provides ventilation for engine compartments, galleys, bilges and heads. Mounting feet allow vertical or horizontal installation in confined spaces. Install with #10 fasteners. Individual box includes 2 tie straps. All are CE certified. 16-Gauge tinned and caulked copper wire leads.