Product review (3 stars): Unnecessarily tedious installation
Cons:
You have to nearly disassemble the whole unit before you can even begin to install it.
Surprise parts you might need that are not included, which the description does not mention.  Such as an electrical wire clamp and damper if you use a 7" round duct.  Strangely, a damper is included for a rectangular duct only.
It lacks screw holes to fasten the duct holder to the unit.  Better have duct tape handy.  And the screws are too short.
Made entirely of the cheapest materials inside and out.  Seriously, they just don't make them like they used to.
I hope the flimsy metal keeps the unit held up on the 4 tiny screw mounts over time.
Fan on low is very weak, practically useless.  Really needs a third fan setting.  High is more like low compared to better products.
Not the smartest design, with the vents only covering the back half.

Pros:
It's shiny.
It actually worked the first time I turned it on.
It had no dents or scratches on arrival.