Product review (2 stars): This unit looks nice and I like the enclosed bottom
This unit looks nice and I like the enclosed bottom.  What I don't like is the noise level.  Standing anywhere near it sounds like I am in a wind tunnel.  Had to purchase a damper and when installed, it rattles loudly to add to the wind tunnel sound. Level one is not bad, level two is too much and level three is totally unbearable.  I purchased this "better "  quality one in order to reduce sound level, change color to match new kitchen remodel, and to have one that was enclosed {by the screens), so it looked nicer and was easier to clean.  This is a vertical, outside ducting.  Left original ducting in.  Don't know what I'm going to do yet.  Haven't contacted customer service yet, but not sure they will have any answers on how to fix it.