Product review (2 stars): Be prepared to engineer this yourself.
I was able to correct most issues but one I have no fix for  You will need to rig an attachment for the flexible ducting at the top of the chimney there is nothing there designed to hold it.  If it is noisy when the fan is on high, try putting a slight bend in the flexible duct to quiet it.  The screws to attach the chimney to the unit are on the back of the chimney.  You have two choices to secure it.  Drill your own holes in the sides of the chimney or  go through your wall from the back side to secure it.  .  The problem I have not figured out is this:  Since I am not ducting this outside I purchased this with the carbon filters, they are supposed to attach to both sides of the fan.  The right one fit fine, but as the picture shows the controller box is in the way of installing the left one.  If both filters can't be installed there is no reason to install either of them.  Without the carbon filters this just blows stuff around with no filtration.  If there is any smoke be prepared to have your smoke detector go off.  Too bad, because it looks great, it's quiet and I would still give it a good rating if it weren't for the filter problem.