1、High Durability: Made of engineering grade ABS material, resistant to rust, UV rays, aging, and yellowing, not easy to crack and deform, suitable for various outdoor environments. 2、Efficient Air Circulation: With a size of 205x185mm and a cut hole size of 175x155mm, the fan provides quick air exchange between indoor and outdoor spaces, ideal for bathrooms, kitchens, warehouses, and lounges. 3、Flying Objects Blocking Design: The fan cover features a ventilated grille design and is equipped with a screen, effectively preventing flying objects and debris from entering the vehicle interior. 4、Wide Application: Suitable for RV camping vehicles, trailers, boats, caravans, yachts, and other enclosed spaces, providing clean air circulation and ventilation. 5、Easy Installation: Simply cut a 175x155mm square hole, wire the fan, seal the edges with water resistant glue, secure the fan with screws, and attach the grille cover for a complete installation.