Here is the drill template I used for mine. Fell free to use.
Robert told me that if you use a 5mm Male standoff paired with a 20mm Female standoff (on opposite sides of the PCB) you don't need any mounting holes or hardware on the outside of the enclosure.
Robert told me that if you use a 5mm Male standoff paired with a 20mm Female standoff (on opposite sides of the PCB) you don't need any mounting holes or hardware on the outside of the enclosure.