We have decided to fit the fan in our bathroom in the ceiling, but we are not 100% sure about what kind of extraction system is needed.
The plan is to fit a 6" in line fan in the roof and vent it like this:
But we were after a fan that has a humidity sensor/ movement sensor for fully automatic operation but I cannot find an in line model like this.
Could we get a 6" centrifugal fan and vent it in the same way?
If so what are the advantages/dis-advantages of the two solution.