Product review (5 stars): XtremeAir PX15 hood looks and works great!
Installed range hood in my open concept home, and immediately see/smell the difference!!! Now the open concept kitchen/living room makes great sense :) I had a little challenge b/c there was no clear opening to the roof, so I had to improvise with ceiling beam and insert oval duct pipe. Also, my high ceiling on angle, thus also had to improvise around the beam and ceiling's angle. In addition I used 6in-to-7in reducer and 7in duct pipe with 7in roof cap to increase upward flow. I decided to make hood as efficient as possible, since it is installed for a long time.
One small minus: the little aluminum flapping wings that come with the hood get extremely noisy at high speeds. So, I removed them b/c the roof cap has gravity damper flap included.
Of course the hood makes noise, but unlike the microwave, it actually sucks out the smell. All-in-all, very satisfied with the purchase. Hood looks and works great!