This is my latest design for use with a 4.3" screen that connects to the raspberry Pi via a ribbon cable. It can be found at: https://www.amazon.com/dp/B0FP1SZF71?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
I started with the "DeckTility" design but it did not work for my 5" screen. So I set off to make my own design based on their design. Before long I had three Raspberry Pi designs. When it came to the 3.5" and 4.3" screens I made adapters for the 5" case design to fit the smaller screens.Then I decided to make a custom design for the 4.3" screen.
All of my designs are on thingiverse. https://www.thingiverse.com/bobdavis321/designs
Should I do my own design for a 7" LCD?