For mounting use my T-Nuts > https://www.printables.com/de/model/897821-skadis-nuts-mounts Or try the original one, both should work.
Height for PowerSupply: 51,5mm, but you can edit the model on TinkerCAD to your own needs > https://www.tinkercad.com/things/3RJoBZAtUr4-skadis-powerstrip-hanger?sharecode=0mW3u23ycrdf4zxHEzo_ftvnH4XgxaYAi6VyI2gqKDk
The author marked this model as their own original creation.