5V RV Side Vent Fan One Way Silent Wind Air Vent Ventilation Exhaust Fan for Caravan Motorhome Camper Yacht 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