Function: 1. Strong wind, low noise, effective and quiet ventilation, quickly remove moisture and odors. Dustproof filter, two-way high-efficiency ventilation. 2. Built-in copper motor with thermal protection, can work continuously without maintenance. 3. Space-saving top-mounting, easy to assemble, no complicated tools required. 4. The frame and blade are made of ABS material, painted white, waterproof, dustproof and energy-saving. 5. It can be used in kitchen and bathroom, suitable for sea ships, yachts, motorhomes, trailers, motorhomes, etc. Specification: Item Type: Camping Car Fan Material: ABS Rated Voltage: 12 V Hole diameter: ok. 118mm/4.6in Speed: 1800 rpm /min Air Volume: 60CFM Installation thickness: ok. 80-160 mm/3,1-6,3 inch (adjustable) Installation method: open hole, connect at both ends to install How to use: install, repair and start working Wiring: Fan positive pole connected to the middle tripod of the switch. The negative pole of the fan connected to the negative pole of the power supply. The positive pole of the power supply is connected to a tripod at both ends of the switch. List of packages: 1 x Fan 1 x Air Outlet 5 x Screws 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.