Product review (1 stars): A pretty awful design
A pretty awful design. It leaks air everywhere. The internal fan compartment is open to the the outer enclosure and the outer enclosure is just sheets of bent mental held with some screws. Air leaks out the return vent, light bulbs, and edges where the sheets of metal meet. Even if the internal baffle is closed. I even sealed the return duct with tape and it still leaks all over.

Also, the vertical baffle that's sold separately for some reason is noisy and rattles when the fan is on.

I've had this for about 18 months and basically functions as an unvented range hood. Eventually I'll replace it when budget and time allows.