This is a bracket for the BigTreeTech Octopus (Pro) using two of my DIN rail mount.
You need 8 M3x8 screws in total. 4 screws to attach this bracket on to the DIN rail mount and 4 screws to attach the board itself. You will also need 4 M3 heat inserts for this bracket.
With this bracket you can mount your board horizontal or vertical to your DIN rail.