Product review (3 stars): The one I bought is pretty loud. Annoyingly loud.
I know this is the "Economy" line range hood, but it does look nice. The most disappointing feature is how loud mine is. It is twice as loud (on low) as I expected. On high, it is as loud as our vacuum cleaner. Fans are not rocket science, and a nice, quieter fan should not be a matter of financial consequence. The fan in this one looks exactly like one I took out of a 40 year old mobile home to use in my shop. Also, vent pipe and fittings are male on one end (the crimped end), and female on the other. Air flow should run from the female end to the male. That means, that the fitting on the range hood should be sized as the "male" end, so your ducting can run accordingly. The fitting on this range hood is sized as female, so if you plan to put ducting pipe on it, and run it correctly, you may have to crimp the range hood fitting down a bit for the female end of your ducting will fit over it.
My advice, if you buy this one.......remove the grease filter, then the two screws that hold the fan in. Drop the fan down, the take and cut two rubber strips where the fan bracket goes, so that it will prevent the fan bracket from making direct metal to metal contact when re-installed. This will dampen vibration and cut some of the noise.