The Air Whisk system provides the same versatile cleaning of all types of ducts as the Sidewinder, but is limited to 20 foot sections or less. A 20 foot stiff hose is used for insertion into the duct to be cleaned. The Air Whisk comes with a Forward and a Reverse duct ball for additional versatility. It requires a minimum 2 H.P. 125 P.S.I., 6 CFM compressor, but will also work with 175 PSI high performance compressors.