Let the air flow with the HIKE CREW 14 in. Manual RV Roof 12-Volt Vent Fan with 6 Speeds. Don't stay in your RV with stuffy, unbreathable air. Install this roof top vent fan and let the stale air out so fresh air can come in. Travel in your RV with friends and family knowing your air is circulating the way it should. This roof vent fan airs out your RV removing odors and smells from the comfort of your vehicle. Installation is a breeze. Place the fan in the RV sunroof opening, connect the wires, and let the ventilating begin. Adjust between 6 levels of fan speed. In case of rain or other harsh weather, you can close the sunroof of the fan. Don't let anything in you don't want to. Even when the sunroof is open, the stainless-steel screen lets sunlight in while keeping bugs and other debris out. Those who like cooking, sleeping, and relaxing in their RV will definitely be a fan of this device.