Product review (3 stars): Good for NEW, not for a REPLACE install
Looks nice, but not robust. If you plan to put in a NEW location this may work alright.  If you are putting in a location where duct work above the ceiling is already in place, DO NOT buy this one. This is designed to be completely assembled before you put it up and install as all of the hardware for finishing is attached in the back, even the duct covers..  So, once you get it installed you have had to remove all of you existing duct work, and reach down through the ceiling to pull the new up through.  You could expand the included flexible duct that comes with it and connect it to existing ducts, and hope it stays attached when it collapses, but that is not prudent.  You have no idea how it went because the covers are already installed.