Needed to cover the live wires of the printer but could not find exactly the correct item here so designed one for myself to the exact dimensions of my PSU - comes with my printer - Geeetech Full Metal Aluminium Prusa i3X. Also needed clamps to fix it to the 6mm Alu frame so made those as well.

From the pix you can see that the PSU has no fixing holes on 2 sides so makes it difficult to fix the cover. It is fixed with one self threaded screw and one ziptie as shown.

The clamps fit over the PSU and are a tight fit. Then they are fixed to the frame and tightened in place with an M3 screw in the hole provided.