Feature 1AUTOMATIC LIFTING LID: The electric lift lid features an automatic opening and closing mechanism, closing the lid and shutting off the fan when the lid gets wet. 2EFFICIENT AND POWERFUL: RV roof ventilation fan provides excellent air circulation in your RV. The specially designed motor moves a large amount of air but consumes very little power. 3REVERSIBLE AIRFLOW AND 10 SPEED: The roof vent can be used to either draw fresh air into your RV or exhaust hot air out of it. This RV roof vent fan operates in both forward and reverse directions with adjustable speeds ranging from low 1 to high 10. 4TRANSPARENT FAN BLADES: This exhaust system keeps your motorhome fresh and bright. The clear fan blades bring in sunlight and the smoke colored dome filters the sunlight. 5LOW NOISE LEVEL: Unlike other RV fan motors, the roof vent fan and vents are powerful and quiet. It accelerates and decelerates slowly, so there is no sudden noise when starting and stoppingItem Type: Roof Vent FanMaterial: Polyethylene + ABSRemote Control Battery: 2 x Triple A 1.5VBatteries (batteries not included)Application: Fits standard 14in x 14in openings of RVs, trailers, campers, motorhomes, buses, yachts, and other large vehicles. Provides quick exchange of indoor and outdoor air, bringing fresh air into your vehicle interior Package List1 x Roof Vent Fan21 x Mounting Screws1 x Fuse1 x Remote Control1 x User Manual