We love the look but it would be nicer with a one piece duct cover.  We had to use an extension which is fine but the seam is noticeable.  Would be great if you provided a single long piece for the cover that you trim the upper end down to size and cover with a small trim piece.  Noise is moderate; not the quietest and not the loudest either.  Installation was easy.  Measurements for the duct cover extension need to take into account the distance from the top of the range to the ceiling.  Not from the floor.  Also would be nice if button were backlit.  Can be tough to read in certain lighting conditions.