Product review (1 stars): the smooth bottom is not a good idea from a design perspective
They advertise it as 900 cfm, not even close.  I checked, it has two motors, they are 40 watts each.  I instead bought an inline remote blower, it was an 800 cfm model, but it was about 400 watts-  nearly 5 times more power.  I also thought the lights on this model were very dim, and they don't point at the stove, instead the point straight down, instead of angled backward slightly which would put more light on the stove top.  Finally, the smooth bottom is not a good idea from a design perspective, it allows smoke and odors to bounce off and away.  There are many better choices.