This model is loosley based the the energy charger of "Black Mesa". It is meant to be installed in a cabinet that resembles said charger.
The two "socket"-parts are meant to be printed in grey/silver filament and the "Tube"-part is needed three times in translucent filament and is intended as a diffuser for light effects.
The entire "tubes" assembly is 210mm wide which is the correct size for a 800mm tall and 540mm wide cabinet.
Edit 2019/05/22: Added the keypad which should be printed in black.