Pufter wrote:
I've fitted a hotpoint extractor hood from B&Q. Where this is fitted
there was an ordinary extractor fan venting to the outside through the
cavity wall via a 100mm PVC pipe. I want to vent the new cooker hood
through the existing hole, but the top of the extractor has a 150mm
round outlet. What is the best way to reduce this to 100mm to vent
through the existing hole (which is at 90 degrees to the extractor so
flexible conduit required). I've seen a 125mm to 100mm PVC collar in
Screwfix, but not 150mm to 100mm anywhere.
Mkaing the hole in the wall bigger is not really an option! Thanks.

Try http://www.bes.ltd.uk - they're normally the best place to try for
this sort of stuff.

David