AV In Wall Rack - Recommendations


I want to stick an AV rack into a wall and be able to customize the shelves. 
craigert
This is exactly what I want right here. Does anybody know where I can buy this insert?
That one says it was custom built. I’d start with the racks from a supplier like this, a slide out is often a good choice
https://www.middleatlantic.com/products/racks-enclosures.aspx
This is exactly what I am looking for!! It looks like the Essex MMR series would be perfect and I can choose blank panels from accessories. 

It doesn’t say anything about In-Wall use. I know nothing about this other than I’m hiring a carpenter and showing him a picture for when he finishes my basement. Do I need a thermal or fan panel since it’s in the wall?