Air Conditioning Ducting Reducer Kit 5" to 4" 125mm 100mm Duct Connector + Tape
Air Conditioning Ducting Reducer Kit (Duct Connector + Aluminium Foil Tape). This kit enables you toreduce circular ducting systems from 5" to 4" and can also be used to enlarge outlets from 4" to 5" for a wide range of applications.