12V One Way Silent Ventilation Fan for RV Camper Van Marine Boat Cabin Air Exhaust Features： 1、Weather Resistant: Made of engineering grade ABS material, this exhaust fan is sturdy and resistant to rust, UV rays, and aging, suitable for various outdoor environments. 2、Efficient Prevention: Equipped with a net, this ventilation exhaust fan effectively prevents mosquitoes from entering the vehicle, with a waterproof ventilation grille for added guard. 3、Fresh Air Circulation: This exhaust fan quickly exchanges indoor and outdoor air, providing fresh air for your vehicle's interior, ideal for installation in bathrooms, kitchens, warehouses, and lounges. 4、Wide Application: Perfect for RV campers, RVs, trailers, boats, caravans, yachts, and more, this side air outlet ventilation exhaust fan ensures optimal ventilation for various vehicles and living spaces. 5、Easy Installation: With a DC5V working voltage and 1W power consumption. Using the included screws, you can have the exhaust fan up and running in minutes. Specification： Item Type: RV Side Exhaust Fan Material: ABS Working Voltage: DC5V Power: 1W Air Flow: Approx. 2.3 m3/Minute Installation Opening Size: Approx. 175x155mm/6.88x6.1in Wiring: Red wire connects to the positive, black wire connects to the negative Application: Suitable for RVs, campers, motorhomes, yachts, bathrooms, kitchens, warehouses, and lounges, quickly exchanging indoor and outdoor air to provide fresh air for your cabin Installation Steps: 1. Confirm the location for the opening and clean the surface, cut a 175x155mm square hole on the panel 2. Wiring, red wire connects to positive, black wire connects to negative 3. Insert the exhaust fan into the hole and apply waterproof glue on the four sides of the fan 4. Secure the exhaust fan with screws, install the grille cover to complete installation, make sure the grille faces downward for waterproofing Package List： 1 x RV Side Exhaust Fan 1 x Cover 3 x Screw Hole Cover 11 x Screw