Product review (5 stars): Love this fan
Love this fan.  I bought this to replace an over-the stove microwave/fan that did not do anything at all and eventually it stopped working after all the grease accumulated on it, so I refused to spend another $400 on buying another microwave/fan that would break after a few year and does not even do the job.  After returning a previous one because the vent was too wide (8"), this one did the trick because the exhaust was 6" and it could be adjusted to 4 which is more of a normal range (4-6) for a house fan.  Is not that noisy, I would say is normal, even on the 2nd setting and I rarely need to use the 3rd setting because is powerful enough.  Love the fact that I can leave it on the timer and walk away to have dinner after cooking and then it will turn off itself after 5 minutes or so.  The 2 light settings are nice as well.  Very pleased with the purchase.