Product review (2 stars): Inner and outer duct cover pre-welded
Received the pkg quickly but had couple of problems: 1. A small dent on the outer frame which you cannot see until after you peel off the white colored plastic. We saw that after completing the Installation. 2. The alumunium filter that goes inside the filter cover was missing. Have reported to customer service who said they'll reach out to the manufacturer.
The installation itself is little tricky.
- The inner & outer duct cover comes pre-welded (i.e., you've to slide them over the lower support frame mounted on range hood body. Due to this, you don't have room to fix the duct properly & firmly. We could not peel the plastic out of the inner duct cover completely as outer duct cover was covering that ( we did not remove the peel until after completing the installation to avoid mess up of drywall dust/paint)
- sliding the lower support frame inside the upper support frame is very tricky (the screws that are used to mount the lower support frame with the range hood body was onstructing the upper support frame to slide over the lower support frame).

Also, I remember reading in the product description that you can control the on/off, fan speed and light from both sides. As you can see in the picture, it's only available on the front side.
I wish the manufacturer has thought through these points and also documented the instruction manual better.