This hood came with our new house. It is a true vent to the outside, it really does a great job! We upgraded the lights to an LED bulb and love it. Our only complaint is that even on the lowest speed...you can't hear yourself think. At just over a year old, we also just noticed that all the markings under the buttons just seemed to rub off and disappear. Obviously still usable, and I know what button does what....but really?