Product review (3 stars): Not for low ceilings.  Difficult to install.
Took me the better part of two days to install this thing.  Do not purchase this if you have 8' or lower ceilings.  Maybe even 9' or lower?  The chimney that goes from the hood to the ceiling is two piece, like a telescope.  I had to cut both pieces shorter to accomodate my 8' ceilings, and one of these cuts is visible in the final installation.  A real pain, and if you screw it up you're out of luck.

It's supplied with ~10' of flexible plastic ducting.  Too flimsy for my needs, so I used rigid duct.  This became a big hassle; the vent of the fan and the opening in the top of the frame are not lined up.  Tight spaces and sharp metal edges made for a nightmare.

But in the end it works, it looks nice, and it's affordable.