Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4844056.

This is a sleeve case remix tested with a Raspberry Pi 3. There are V-rail clips that allow it to snap into the 3D printer beams. The case body is remixed from "Sleeve Case for Raspberry Pi" by walter. The faceplate is changed to be screwed in place and the vents are changed. The snap tabs are from "Ender 3 Cable Chain" by johnniewhiskey.

It should be printed with supports for the V-rail clips, other regions should not need supports.

Small screws are used to hold the faceplate on. I used scrap screws, which I measured to be 3-48 x 1/4".

Design was done in OnShape, so if you want to fork it you can get my parametric model.