Product review (3 stars): It's good for the price
I bought it because we have no vent above our stove and everything along the shelf and refrigerator next to the stove was getting coated in grease.  Putting in a proper vent through the ceiling is not an option at the moment.  I hoped a filter/fan would at least cut down.  No way to tell yet how well it's doing pulling greasy air through the filter, I must say, it does not seem to generate a lot of suction, but perhaps it doesn't need much to do what I need it to.  But it is cheap and easy to install.