wanghaiyanBD 340 opening black cover, skylight exhaust fan, RV roof-mounted modification kit, motorhome ventilation, 11" Roof Vent for RVs & Trailers - Reversible 12V Fan

1.Compatible with various roof thickness: This roof vent is designed to fit roofs that are 2" to 3.9" thick, making it suitable for a wide range of RVs, campers, and trailers with standard 11" x 11" openings. 2. Quiet and powerful operation: You can use this RV roof vent without disturbing others in the house, thanks to its powerful yet quiet fan 3.Universal RV Roof vent with reversible 12V fan: This RV roof vent comes with a powerful 12V fan that can push stale air out and pull fresh air into your RV, camper, or enclosed trailer. 4.Variable-speed fan for customized airflow: The fan offers six different speeds, allowing you to easily adjust and control the airflow according to your needs. 5. Easy installation for convenience: We understand that getting on the roof of your RV can be intimidating, so we have made the installation process as easy as possible for you.