3 1. Power: 18W 2. Current: 1.6A 3. Voltage: 12V 4. Speed: 1200 / Min 5. Speed: three fan blade speeds 6. Airflow: two-way 7. Fuse: 5A Slow Melted (to prevent the fan from short-circuiting and burning out) 8. Rain sensor (automatically close the window when it rains): No 9. Remote control: No 10. Opening size: 40*40cm/15.7*15.7inch Exhaust port size:46*46*17cm/18.1*18.1*6.69inch Packing box size: 48*48 *20cm/18.9*18.9*7.87inch RV thickness requirements: 25mm-55mm Package 1 * RV fan Keep cool in a comfortable RV The manual ventilation system provides powerful air conditioning for each mobile home or similar leisure vehicle, reliable exhaust gas, universal design, suitable for 40 x 40 cm/15.7 x 15.7 inch skylight openings and Electrical connections. Delivery Takes 4-10 Days