In Line Air Blower 3in 145CFM 12V High Efficiency Marine Bilge Blower for Boat RV Yacht Item Type: In Line Air Blower Material: ABS Shell + Copper Motor Core Air Flow: 145CFM Working Voltage: DC12V Fuse: 5A Current: 3Amps Size: 3inch/76mm Application: It is suitable for RVs, ships and yachts, and is very suitable for applications at bilge, engine room, passage and canopy Installation: 1. Use two M6 screws to install the fan on the upper part of the bilge, power room, kitchen and toilet. When fixing the screws, the screws shall not be over tightened to prevent them from penetrating the casing. 2. The fan shall be installed with a moderate inclination to prevent rain erosion. The arrow direction is the air outlet (the correct air flow direction must be confirmed before installation) 3. Connect and fix the inlet and outlet conduits with a diameter of (145CFM - 3 inches) with stainless steel pipe buckles. 4. The intake duct shall be permanently installed and fixed above the bilge plane and properly located under the engine. Wiring: 1. Red is positive, black is negative, and crimp contact connector is used. The joint shall be waterproof with sealant. 2. The positive pole must be connected with a fuse 3. The positive pole must be connected with a disconnecting or connecting switch with the same power as the fuse. 4. The minimum wire diameter is 16AWG (standard size).