RR Fan’s High-Volume Low Speed (HVLS) fan is an Air Circulating device which has a Large Diameter in comparison to a conventional Ceiling fan. It is available in varied sizes ranging from 8 to 24 feet. These fans are generally ceiling mounted although some are Pole mounted too. The key highlight of these fans is that they move slowly by distributing large amounts of air at low rotational speed, hence they are known as High Volume Low Speed (HVLS) Fans.