his is a pretty minor tweak of wojciechsura's excellent 7" Waveshare case (thingiverse link) for folks with a "Longrunner" (or similar) brand. The two appear to be identical, but the dimensions are slightly different and the Longrunner case needs more clearance for the HDMI plug.
I've included Fusion 360 files for the original and my modification. This thing is built like a tank! I used PETG, but I am sure PLA will work just fine. This case is FAR better than the very flimsy case provided with the version that I ordered from amazon (archive.org saved here).
Print with supports for nuts and screw heads. I used M3x15 screws with M3 nuts to put it together.
Wojciechsura also designed two options for stands (low and high). Remember to print two of whichever you need. Finally, there are a number of mounting holes on the back.
The author hasn't provided the model origin yet.