RV Side Vent Fan 8.1 X 7.3in One Way 12V Motorhome Exhaust Fan with Louver Cover and Mesh for RV Trailer Item Type: RV Side Vent Fan Operating Voltage: DC12V Power: 2.4W Speed: 2000 RPM Air Volume: 2.3m³/min Size: Approx. 205x185mm / 8.1x7.3in Installation Hole Size: Approx. 175x155mm / 6.9x6.1in Wiring: Red wire to positive, Black wire to negative Application: Side exhaust fan for quickly exchanging indoor and outdoor air, providing fresh air for your vehicle interior, solving problems for damaged walls Suitable for: RVs, camping cars, yachts, bathrooms, kitchens, warehouses, lounges Installation Steps: 1. Confirm the location for the installation hole, clean it, and cut a square hole of 175x155mm on the panel 2. Connect the wires, red wire to positive and black wire to negative 3. Insert the exhaust fan into the hole and apply water resistant glue around the four sides 4. Secure the exhaust fan with screws, install the grille cover, and installation is complete. Note that the grille should be facing downward for waterproofing