Model R-DF Dock Fans recirculate air throughout the loading docks. Developed by Romlair Fan Company, this fan is also known as the “Romulator”. The powerful blowers greatly increase air velocity, pushing air deep inside of a 53′ trailer. This solution improves comfort and productivity during loading and unloading. The inside of trailers boxes often becomes extremely hot while they are parked in the platform area. That is why dock fans, like the Model R-DF, are so crucial.