Feature: 1. 14 Inch Size: This RV roof vent exhaust fan is designed to tightly fit a 14 inch RV roof opening and is also compatible with openings up to a maximum of 14 1/2 inches. It is suitable for RV roofs ranging from 1.9 to 7 inches thick, but you may need to trim down the garnish when your RV roof is about 1.9-6.1in thick. 2. Remote Control: Unlike manual control, the remote controlled RV roof fan provides convenience and efficiency, especially in hard to reach areas of the ceiling. In emergency situations, manual control is still available. Additionally, it features an automatic rain sensor function for automatic closure. 3. 10 Speed Options: Equipped with additional slow blow fuses, this reversible RV roof vent fan offers 10 speed adjustments, providing airflow of 400-1300 CFM in both intake and exhaust modes. Easily operate it with buttons or the remote control for flexible and convenient control based on your preferences. 4. Quiet And Energy Saving: Operating at 12V, this RV air ventilation ceiling fan runs quietly and efficiently, with a maximum noise level of only 35dB in high power mode and a power consumption of just 22 watts. Enjoy a peaceful and energy efficient environment inside your RV. 5. Reversible Airflow: The air ventilation ceiling fan can be used to draw in freshing air or expel hot air from your RV. It can operate in reverse or forward modes for optimal airflow control. Enhance ventilation and air circulation in your RV with this versatile and effective roof fan. Specification: Item Type: RV Ceiling Vent Fan Material: ABS, PC Motor Voltage: 12V Fan Speeds: 10 Speed Reversible Power: 22W Control Method: Panel, Remote Control Net: Removable and Washable Top Cover Material: UV Resistant PC Remote Control Power: 2 x AAA Batteries (Not Included) Size: 14 Inch. Package List: 1 x RV Roof Vent Fan 1 x Remote Control 21 x Screws (Allowance Error ±1) 1 x Fuse 1 x Manual