I designed this part to go into this mod10 rack:
https://www.printables.com/model/1225275-modular-10-server-rack-mod10
This shelf will also fit into any other 10" rack that follows the standard rack dimensions.
I used 3M VHB tape to attach the PSU to the shelf. The strap that you see bolts to the rack with 1/4-20 bolts and nuts. This is to squeeze the wires and stress relief them so there is no pressure on the ring terminals when they attach to the PSU.
I printed this on my MK4S. It will max out the build plate. When the part is loaded into Prusaslicer, it needs to rotate 90 degrees to fit on the plate.
The author marked this model as their own original creation.