Reduce your larger ducting to suit a smaller hose size or adapt to your machine outlet. All connectors suit the size of hose listed – therefore are the male-size connection.
New YW-1077 2 1/2 ---> 1 1/2in version available for vacuum/extractor adaption.
New YW-1035 2 1/2 --> 2 1/2in version available to connector two lengths of 2 1/2in hose together (similar to the YW-1019) connector. It will not connect the clear tube found in the YW-1000 63mm Wall-Mount Extraction Kit.