Feature:1. Unique Design: The ventilation fan has low running noise, with large exhaust volume, fast ventilation, ensure quiet operation and longer service life.2. Waterproof Grille: In the rainy day or daily car wash, the rain will flow down the wall of the car, and the grille tilt design prevents the rain from flowing in.3. Filter Net: Built in filter net which can effectively isolate garbage in the air, and prevent mosquitoes from entering, but will not affect the ventilation effect.4. Two Way Ventilation: Built in three fans, with two way cooling, which can quickly take away heat, blow in fresh air to ensure air circulation in the car with safe operation.5. Material: Made of yellow resistant materials, which are strong and durable, with the characteristics of yellowing resistance, long service life, firmness and durability.Specification:Item Type: RV Ventilation FanMaterial: Engineering grade yellowing resistant material.Size: Approx. 480x185mm/18.89x7.28inFunction: Two way ventilationFeature: Insect repellent filter, strong wind, low noise fanPackage List:1 xVentilation Fan1 x Cover3 x Hole Cap19 x Screw