Our Rigid Stainless Steel Square-to-Round Couplings are designed to connect our Rigid Extractor Ducting to our Flexible Ducting when breaching from an Enclosed Chimney the Exterior elements (or visa versa)
This Square-to-Round Coupling is made from Stainless Steel, and is designed to handle Outdoor installations where the Ducting in not enclosed inside a Chimney, or is not protected from the outside environment.
Please see our various Extractor Fans for more information on choosing the right Ducting lengths.