Great question — answering as the UphillTech team:
Here is the preliminary result, a dry fit using 1/4" drywall. It leaves me with a 1/2" space , you can see at the top of the cabinet where I am using a T track that I had around to simulate the U profile I will install there
Full answer by MiniMe: https://diy.stackexchange.com/a/330403 (CC BY-SA 4.0).
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