Feature:1. Strong wind, low noise, effective and quiet ventilation, quickly remove moisture and odors. Dustproof filter, twoway largedisplacement ventilation.2. Builtin copper motor with thermal protection, it can work continuously without maintenance.3. Spacesaving top mounting type, easy to install, no complicated tools required.4. Frame and blade are made of ABS material, painted white finish, waterproof, dustproof and energysaving.5. It can be used in kitchen and bathroom, suitable for marine ships, yachts, RVs, trailers, motorhome, etc.Specification:Item Type: RV FanMaterial: ABSRated Voltage: 12VHole Diameter: Approx. 118mm/4.6inSpeed: 3000 rpm/minAir Volume: 80CFMInstallation Thickness: Approx. 80-160mm/3.1-6.3in (adjustable)Installation Method: open hole, connect at both ends to installUsage: Install and fix and start workingWiring:Positive pole of the fan connected to the middle tripod of the switch.Negative pole of the fan connected to the negative pole of the power supply.The positive pole of the power supply is connected to the tripod at both ends of the switch..Package List:1 x Fan1 x Air Outlet5 x Screws1 x Manual