Wanted a little rack case for a little rack.  Also, tons of my pi projects would benefit from this simple formfactor. 

It's a half-rack 1u, so 10" wide.  Rack parts can be bought from Amazon.

This unit fits NVME storage but only if it's mounted on the bottom of the pi.

There are mounts for two 40mm fans. A Meanwell RS-35-5 or RS-50-5 PSU finishes it off.

Model is shared at:
https://cad.onshape.com/documents/5d104a400a3d42ce3ae37096/w/3104027bdb3edfe9885bf31e/e/602ccd302ecc5bfad16385b1