I bought one when they first introduced them and were offering them at a reduced price. I haven't installed it yet.
You will just open the sheet metal that is wrapped around the stack with the heating elements. The sheet metal on mine is just held in place with tabs that hook through holes, so you just bend them back and it will open right up. There will be insulation packed inside when you open the sheet metal so you can just push it aside. It looks like a very easy installation.
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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD