Like mentioned it is an old thread but i might be able to help.
The door tracks, you can order from any hardware store. They are just plastic door tracks like https://www.homedepot.com/p/Knape-Vo...H-48/301011399
As for the t-stat case, not sure there but it looks like a VE shell to me that he just cut the front to fit the t-stats he had.