RV accessories for vents and fans are here. FanTastic Vent 802250 Ceiling Fan is made for RV's, Campers and enclosed trailers.This built-in 12V fan uses a thermostat to help maintain an even temperature inside your RV and Camper. Push that bad air out of the enclosed area and pull fresh air into your RV. Hand knob on vent housing enables you to lift and lower the dome with ease. 3 Manual speeds let you raise or lessen airflow as needed.