Feature: 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. Specification: Item Type: RV Side Ventilation Fan Working Voltage: AC220V Power: 3.1W Size: Approx. 205x185mm / 8.07x7.28in Installation Hole Size: Approx. 175x155mm / 6.89x6.10in Wiring: Red connects to positive, black connects to negative Application: Ventilation fans provide a quick exchange of indoor and outdoor air, providing clean air to the interior of your compartment and a solution for your broken walls. Provides quick exchange of indoor and outdoor air, suitable for RVs, campers, motorhomes, yachts, bathrooms, kitchens, warehouses, lounges Installation Steps: 1. Confirm the position for the vent and clean the appearance , cut a square hole of 175x155mm on the panel 2. Connect the wires, connects to positive, black connects to negative 3. Insert the exhaust fan into the hole and seal the edges with water resistant glue 4. Secure the fan with screws and install the grille cover, make sure the grille faces downward for waterproofing. . Package List: 1 x Side Vent 1 x Cover 11 x Screws 3 x Screw Hole Caps Note: Installation requires drilling for wiring connection. We strongly recommend professional engineers to assist with installation to ensure your best shopping experience.