Product review (4 stars): Nice, Pretty, and Cheap
Its nice and cheap, and stainless.  But, I did not check to make sure the hole was the same as my old one.  This one has a square hole, but my duct was round.  So, I decided to replace the whole duct piece as well.  Which wasn't a bad idea since the old one had a lot of oil and grease build up inside.  In the end it all worked fine.