Product review (4 stars): There are pros and cons to this range hood
I needed to replace my 30" Kenmore range hood. I didn't want to spend a lot of money and wanted to buy a medium priced hood. I suspected that Broan might have manufactured my Kenmore hood which I think was the case.  The mounting screws and duct placement were exactly the same  as my old one which was a plus. The hood is not bad looking. I am a home improvement contractor and these are the circumstances that I encountered. As stated in other reviews I too needed to bend the support housing that holds the fan in place to make it spin quietly. With a little tweaking it spun freely. The par 20 bulbs Broan recommended are a joke. They protrude out of the unit and basically look like you bought the wrong bulbs. I ended up buying I believe par 16 bulbs. They are interior exterior and have a short length so they don't project past the hood unit. The bulbs are also flat which makes them sit flush. Why they recommend the par 20 is beyond me (some money wasted on  the purchase of those bulbs). I would recommend aluminun tape ( brown paper back that peels off to uncover adhesive) over duct tape to make connections on your exhaust. I tested the damper above my range hood after I mounted the unit to the bottom of the cabinets. I noticed that the damper opened beautifully but did not close when the fan was turned off. I tried to adjust the stop, I lubricated the pivot points but nothing seemed to help. Gravity will only work if they make the stop longer so the damper does not sit in a perfectly vertical position when open. Fortunately I have a wall damper on my exterior wall which will cut down draft. The low fan setting is whisper quiet but does not pull much of anything out of your kitchen. The high setting is loud but effective. A plus with the unit is the bottom is sealed so the two filters will catch everything. My other unit used to trap grease like crazy. You do need to reconfigure the duct work depending on your exhaust to the outside. Mine was an up through rectangular duct work. What I did was I did the proper knock out for rectangular ducting. I installed the damper flange. I slipped the unit in place and checked the function of the damper and then took it back down and used aluminum tape around the damper flange. I also tightened up the round duct knock out which was a little loose with tape. With all that said I guess I got my $139.00 worth. And as always Amazon Prime shipping is awesome.