Product review (5 stars): Buy this range hood
This thing is amazing. I needed to attach an under cabinet range hood to the existing ducting under the range for a downdraft hood that used to be in the kitchen. I needed something with the CFM to be able to get the smoke through five 90 degree turns into the cabinet, into the wall and down, back under the range,  into the existing ducting and out of the house. I was really not sure it was going to work, but after getting the new ducting into the wall and getting the hood hooked up, I was thrilled to turn it on, go outside, and feel a powerful flow of air coming out the vent. I do crack a door or window for return air. After a few uses during cooking, I can safely say I couldn't be happier.

Even with all of that airflow, the unit is unbelievably quite. I've had recirculating hoods that have been much louder.

Aside from the functionality, the thing looks great. Very professional-looking. I did think that the LED lights were too bright. Oddly, I saw a few reviews prior to buying this unit that complained that the lights were too dim, so I though perhaps the company ha'd changed them due to customer comments. I emailed the company to confirm. The replied to me promptly confirming that this was indeed the case, and they sent me a set of the old lights that day. They're much better in my opinion.

Bottom line is this hood is a standout. If you're looking for a hood that will move some air, this is the one for you.