This is simple cover that matches the height, width and add 3 mm to the length. there is a hole to see the LED and one to adjust the potentiometer.
This has been successfully printed and tested I used PETG at 30% infill.
And a thank need to go out to Ronald provided the 3-D modeling of the power supply for the case attached pic.
Small no thrills cover for the new 12v and 24v power supply. V2
Ultra Low Profile power supply Ultra Low Profile cover