Function: 1. Fast air exchange: The ceiling fan provides the function of air inlet and outlet. A black fan guard and transparent fan blades let light into the van's cabin. Take your camper to fresh air. Fast air exchange in your vehicle. 2. Humanized design: Equipped with stainless steel insect screen to prevent mosquitoes, insects, sand and gravel from entering the campervan interior, the motor is made of pure copper core, reliable and efficient, low noise motor, low decibel and ventilation, allowing you to restful sleep. 3. Suitable installation location: Suitable for installation near the kitchen or bathroom, etc., to eliminate the smoke in the kitchen, eliminate the bad smell in the bathroom, let you breathe fresh and natural air, and make the living space more comfortable. 4. Wide Application: The exhaust fan can be used for the installation and operation of large vehicles, such as caravans, buses, yachts, etc. Dual mode of air exchange or air outlet can be switched by one button, no additional operation is required, and it is convenient to use. 5. High Brightness LED: The shell has 4 super bright LED strips, which also can be used as lighting, which is very suitable for installation in dark bathroom corridor warehouse or anywhere. 6. High-quality materials and low noise: The ventilation fans are made of engineering grade ABS plastics, which are ultraviolet resistant, anti-yellowing, waterproof, soundproof and not easy to aging. Specification: Item Type: RV Roof Fan Material: ABS Working Voltage: DC12V Installation Hole Size: Approx. 280 x 280 mm / 11.02 x 11.02 inches Fan dimensions: Approx. 360x360x120mm / 14.17x14.17x4.72 inch Suitable for installation Thickness: Approx. 25 x 60mm / 0.98 x 2.36 inch Dual mode: air inlet or air outlet, one key switch Features: Equipped with stainless steel mosquito net, pure copper core motor, reliable and efficient, 10 blades, more stable operation, quieter, two-way exhaust , 4 LED light strips, can also be used for lighting Application: Change the air in your motorhome or caravan in minutes. It will blow cooking fumes and odors out of the bathroom, allowing you to breathe fresh outside air. Breathe in natural, fresh outdoor air to make your living space more comfortable. Applicable: Can be used for large vehicles such as motorhomes, buses, yachts etc. Package List: 1 x RV Roof Fan 4 x Screw Plug