when the lid is closed
100% Waterproof: And yes! It is 100% waterproof! We did thousands of testing in the rain for hours! A hundred of RV roofs have already been installed in a vent, and they've been tested for more than a year!
Very Quiet: To ensure a highly efficient, quiet operation and high-quality performance, it is equipped with an efficient Black Can Motor. It exhausts hot air out of the RV and draw fresh air in while you sleep!
10 Speeds and Reversible Airflow: It takes fresh air into your RV and exhausts hot air out. It's super quiet on low speed, yet very powerful on max speed. It can move hot air out of your RV right away.
