We put this on a timer switch in a studio apt. kitchenette area, and it saved our bacon! Works very well, looks attractive, and we really like the look on the outside of the house (had to spray paint the metal to match our brick, though).
Moved into a new house without a vent fan in the kitchen. I have non standard cabinet spacing and a window above the cook top. This was a great solution. I purchased the 9.5" washable grease filter also from HD online. I had a friend install it in about 1/2 day. There are no instructions for a stucco install so he cut a round hole same as the inside and installed firring strips with toggle bolts, then attached the vent to it with deck screws.. He had to use wide strips of wood or the fan duct would close too much and seal off the wire opening. He then connected to a nearby switch for an overhead light using a stacked switch on the right side. Eventually I will paint exteriror the same color as the stucco so it will not be quite the eyesore. The only reason I gave it 3 stars is that it is noisy. It does move a lot of air which is what I needed it for so I can live with it. Better than a greasy smelly kitchen.
Pros: Durable, Easy to Install, Good Size & Weight, funtional, grease filter available