extractor fan

[rich22]

Hi guys just had our new extractor chimley hood for the kitchen deliverd today.
What is the best ducting to get?
We live in a bungalow.
The size is 125mm outlet.
And it will be travelling about 2.5meters in length through the loft and exiting through the soffit.

 

[Taylortwocities]

Erm that's easy, get some 125mm ducting!

It also depends on the routing, flat channel ducting with an equivalent area to the 125mm may be useful if the route is across the top of the cupboards, in between joists, etc.