The files here are for 140mm Alphacool radiators (tested with the NexXxos XT45), but at least the single legs should work for any 140mm radiator.
The OpenSCAD files are on github, and can be easily adjusted to other hole distances or be made longer: https://github.com/bwachter/alphacool_radiator_legs
The files here are for 40mm high legs, to be mounted with M3x30 screws. For other screw length or leg height generate your own STLs.
0.3mm layer height draft prints work fine for this.
The author marked this model as their own original creation.