The author remixed this model.
This is a remix of Ant's DIN-rail mount which is based on Farnsworth's DIN-rail mount which itself is based on some Voron DIN-rail mounting clip which unfortunately leads to a deadlink on github…
Nevertheless, it works really fine and now it can also carry a netgear GS305v3 network switch.
This one was printed in SLS but FDM should be possible too with some moderate amount of support. I recommend printing it with the switch-mounting hooks facing the build plate.