Swisscom Internet Box 3 mounting bracket

For some reason unknown to man, the new Swisscom Internet Box 3 comes WITH ABSOLUTELY NO MOUNTING OPTIONS (not even mounting holes). What a stroke of genius, thank you so much Swisscom.
So here's a simple set of mounting brackets meant to fit into a swiss standard-issue "Verteilerkasten". The router slides in from the top and doesn't wobble around once in place. It leaves about 2cm space behind the box for ventilation or to hide cables. It might be necessary to file off a bit from the bracket to get access to the copper internet cable, but since I'm using fibre I didn't bother.