I have been hunting for a while for a in-wall display that will look and work good that isn’t silly money.
I have been curious why this isn’t an automatic raspberry product as likely perfect for the job with a great and well trusted OS and a huge ecosphere.
Best I could come up with is for the official 7" display.
https://cpc.farnell.com/multicomp/cbrpp-ts-blk-wht/raspberry-pi-touchscreen-enclosure/dp/SC14040
The site doesn’t show it well but the rear bezel even if you don’t like the ‘zebra’ effect is all the way round and likely perfect for a dirty but adequate Gorrila tape install.
The pi housing and why I am posting has the following dimentions.
L108mm x W76.5mm x H42mm with 2 thin lugs that likely will see a dremmel.
That would fit a UK 2 gang 45mm backbox.
I took a punt that https://www.waveshare.com/wiki/7inch_DSI_LCD_(with_cam) has the same mounting holes as the official as the in screen cam is a great addition.
I will let you know when the slow boat gets here.