I think you can get an adaptor that will connect the 4" to the 3". It will
make the fan a little louder than it should be, but if you buy a good
quality quiet fan it will be a lot quieter than the cheap one you have now.
Have you checked out the Panasonice "Whisper" fans? They're the wuietest
(and most energy efficient) on the market. They're expensive, but good. Good
luck.


"Steven" wrote in message
oups.com...
Hi,
I am looking to upgrade the cheap builder installed exhaust fans in my
bathrooms. They are incredibly loud.
I can find lots of nice quiet ones, but they all required 4 inch (or
greater) ducts. The only 3 inch duct vents I can find are...cheap and
loud.

Does anyone know of a decent fan that will work with 3 inch ducts?

Thanks
Steven