Product review (4 stars): I'm not as happy with this hood as with a previous hood from ...
Two of the grills on the underside of the hood are warped and hang below the hood. They also vibrate loudly and the lower speeds. I'm not as happy with this hood as with a previous hood from a different manufacturer.

Update:  I contacted the seller and they immediately sent replacement grills/baffles.  It no longer vibrates loudly with the new baffles.  I will update my review to 4 stars instead of 2 since it operates fine now and looks great, and because of their prompt customer service.