Kitchen Extractor ducting

[stevepbuk]

Hi,

I want to replace the kitchen extractor ducting as it was installed by the previous owners of the house and is held together with tape, and looks a mess. Its also not all that effective as the air escapes the joints. The problem I have is that the extractor appears to have a 4.5 inch output for the ducting. I cannot find a 4.5 inch to 4 inch reducer anywhere. Has anyone got any ideas of how I may solve this.

Thanks for you time.

Steve

 

[endecotp]

Is this outer vs inner diameter confusion?

 

[stevepbuk]

Hi, its the outer diameter.

Cheers

Steve

 

[endecotp]

And the internal diameter?

I think you need a 100mm male-to-male coupler.