Product review (3 stars): Nice hood, many installation problems
I was attracted to this hood because of its design and low noise.  It delivers on all of these and the construction seems solid.  So why only three stars?  The short story:  Good hood, good support, so so manual, several installation problems. Strongly suggest downloading the manual and studying it closely before you buy.

INSTALLATION PROBLEMS  (mainly applies to a 12" cabinet.  if yours is 13" or deeper then ignore)
You would think a 12" x 30" range hood would fit a 12" x 30" cabinet.  Not mine.  For the front of the hood to be flush with the front of the cabinet, the range hood needs to be flush to the rear of the cabinet.  But my cabinet had a 1" wood block at the back holding everything together.  I called Zephyr customer support and they said the solution was to slide the hood forward an inch.  This works but it means that the closed hood sticks out in front of the cabinet - so much for the sleek look!  So I compromised, reinforced the back of the cabinet and trimmed part of the 1" block to 3/4".  The second issue was the manual called for two wood screws (provided) but I could not see where they went.  It turns out the screws and the manual were retreads from an older range hood model and they never changed the manual.  The third issue was there was no room for the lower bracket they provided  - so I used two pieces of steel instead.  The fourth issue is the vinyl plastic cover for the back of the hood cracked apart when I trimmed it to size.  To their credit, Zephyr promptly sent me a new one with no hassle.

OPERATIONS: Works well, lowest speed is quiet.  Highest speed is not as loud as my previous hood.  Lighting is great - both low and high.  The one thing I do not like is you have to pull out the hood a bit to get the lights to operate.

PHOTOS:  The first two show the lighting intensity.  They look almost the same but bright is noticeably brighter.  The third shows the finished installation and the last photo shows the metal I used instead of the second bracket, and also shows how much the hood sticks out in front of the cabinet.  Fortunately, you do not see this unless you are standing on a ladder.