Thank you very much for the info.
So is it possible to get a hood with fan that will push air through a 6m long 150mm vent with a 90degree bend in it? Any advice for finding a hood that can do this?
I'm renovating an old house & so have access to the ceiling void to run duct from the fairly central cooker to the back wall (~5.60m) Why don't the joists run the other way!
I will run 150mm duct and am planning to fit a Manrose MF100 inline fan around half way along the run.
Is there a...