The hood is heavy which makes installation very difficult, not a 1-person job.  Also, the mounting method and hardware can be improved.  My old very heavy over the range microwave came with wall bracket that mounted directly to the studs.  This makes installation easier and secure.  This hood only provided wood screws and cheap drywall anchors.  Luckily, the right side of the hood line up perfectly with the stud so I only use the anchors on one side.  The screws provided for the top mount didn't work for me either.  I replaced them with machine screws/nuts/bolts.  The hood is a bit noisy at the highest speed but that's to be expected from 500 CFM.  Overall, I'm very satisfy.