This is a case for a Mux-25 mixer board from repeater-builder (http://www.masterscommunications.com/products/mux/mux25.html).
It has holes for the power cord and the Analog and Digital PTT ligghts.
It has been updated to include screw holes for 3 m2x6 self tapping screws.
It's a snug fit to get the Mux Board in, but it will stay put nicely.
Printer Brand:
Creality
Printer:
Ender 3
Rafts:No
Supports:
No
Infill:20%
This was designed in tinkercad:
https://www.tinkercad.com/things/aMeFxztyArE-mux-25-case/
https://www.tinkercad.com/things/23Z5nk6rh1i-mux-25-lid
The author marked this model as their own original creation. Imported from Thingiverse.