Product review (4 stars): Troublesome Installation, But Great Product
The good:

The unit looks sleek, is very quiet for the amount of air which it displaces, and the LED lights provide ample light.

The bad:

The manual's installation section is literally five sentences, has no explanation of where to use the various fasteners that come with the unit, and has no illustrations.  Thankfully, installing a range hood is fairly straight-forward.  That said, I never figured out where to use half of the fasteners which were included.

The installation was further complicated by the wall mounting bracket for the duct covers.  I found it extremely difficult to position correctly and attach to hold the cover level, because it only has one fastener hole to connect it to the wall.  I ended up using a metal cutting blade to cut it in half and a metal drill bit to create my own fastener holes.  I then positioned each half independently.  Once this was done the duct cover installation was a breeze.

Finally, after installation, I noticed that the stainless steel was developing tiny rust spots from the humidity.  Thankfully, these buffed out easily with a little lemon juice on a dry cloth and have not returned.

Conclusion:

Despite the troublesome installation I would buy this range hood again.  It looks and works great and, after all, you only have to install once.