A 2-piece case for Raspberry Pi 4, with fan mount. STL is in two versions, one leaves the GPIO pins accessible, the other does not.

The STL is flat and with no writing, the grid texture you see was done in Prusa slicer, so you can do it as you prefer.

Fan mount is designed to fit a 30 x 30 x 7 mm CPU fan, I used these:
[https://www.amazon.de/-/en/gp/product/B07FVQG926/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1](https://www.amazon.de/-/en/gp/product/B07FVQG926/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1)

You will need an extra 4 M2.5 screws for assembly (screws are on the bottom side)

Print instructions

I added a slab modifier and set top/bottom layers to 0, and infill to 60% stars. I changed toe color after a few levels, because I liked the look of it. No supports needed.