Product review (1 stars): The reason why I gave it one star is because of extremely poor installation instruction with respect to electrical connection
I bought this blower for my house, to be installed with 30" Broan Vent hood. The blower turned out to be a lot bigger than I expected (my fault, should have checked dimensions before buying it) and because of this, it's installation would have being a lot more complicated than I planned.

The reason why I gave it one star is because of extremely poor installation instruction with respect to electrical connection. The manual says (page #3, see this manual on Broan website):

5. Bring electrical wiring through the hole in the wiring box and secure it according to local codes.
6. Make the electrical connections with the proper con- nector for the type of wire being used. Connect black to black, white to blue, and green or bare wire to grounding screw.

If you will follow these instructions, you will end up connecting this blower directly to 120v and it will be always on. I suspect this blower has to be connected to Broan vent hood (which has fan controls, quite nasty controls by the way) and then vent hood should connect to 120v. None of this is mentioned in Broan manual - what a shame.

Besides, I do not believe the claim that this blower reduce noise. There are fans on the market that spin silently, though there will still be noise coming from the air movement. So unless this blower will be off all the time (meaning no air flow will be generated), I do not see how it can reduce the noise.

I ended up sending both - vent hood and blower back. I bought 30" Vent-A-Hood with double blowers and I am extremely happy with it.
Installation was a lot easier that it would have being for Broan blower, fans are silent - only sound of air flow can be heard (not too loud at all). 600 cfm (they claim it is 900cfm equivalent ) turned out to be more than enough for me. Vent-A-Hood quality of the steel and controls is a lot better than Broan VH (a lot harder to leave finger prints on it).