Product review (5 stars): Great Range Hood for my kitchen
Outstanding quality! Now past 80 I had to call on my grandson to help with install.  He reminded me that I had assumed the roll that he once had as helper.
The hood is made of very high quality material and demonstrates very high quality workmanship.  It was packaged well and was delivered quickly.  I recognized immediately that installation would require cabinet jacks for safe install.  I built a pair of cabinet jacks using pipe clamps and plywood copying a video found on the Internet.  In the end, only needed a single jack rather than a pair.  Reduced the vent by an inch with an adapter purchased at Home Depot and was able avoid a new through the roof vent pipe.
Use the hood at least twice every day and it is excellent in every way.  Led lighting is far better than the old incandescent lights in my old hood.  Filters are superior to anything I had seen before.
Placed a piece of 3/4" plywood between the counter tops on either side of the range, centered the cabinet jack on the plywood and jacked the hood in place under the cabinet which I had prepared.  Because the hood is so large and heavy, moving it into position is a job for two healthy persons!
After securing the hood to the cabinet, electrical and vent connections were completed.  My hood was installed at the minimum recommended hight above the range which was ten inches higher than the on hood.  I modified the old over hood cabinets and am able to store above the hood.
Attached photos show the installation.