Product review (1 stars): with amazon's excellent return policy
They have serious quality control problem.
I ordered one. It came with a huge dent about 2x4 inch in the front/side of the case. For one thing you see numerous times everyday, this is unacceptable.  Ok , with amazon's excellent return policy. I returned it.
However, I also ordered tubing etc with it. So I think I can give them another shot. I ordered a second one, and it came with a dent on the right side/front panel junction, almost same size dent as the first one. Both time, the outer case showed no damages, which means they squeezed it too hard while packing it.
Now I am left with the tubing, and have to find another hood with the correct size vent.