Product review (1 stars): noise is through the roof
The hood is too loud for residential application. There is no difference between quite and high modes in sound level.  I do not think the product is acceptable. I was sold on the size and air flow but didn't even think it can be this loud at quiet mode. I spent 3 days installing this sucker so i'm stuck with it for a while. I have largest duct possible to vent it out. Very disappointed.