ABS no supports. Printed in the same way as it is fixed to the wall.
The author remixed this model.
Unlike the original, this bracket can be screwed sideways to the wall. Hole spacing 160mm (my previous tenant left me these holes and I didn't want to drill any new ones). I use 4,5x45 mm Screws.
Be sure that you remove the rubber feet of the Fritz6000 otherwise it won't fit. I broke my first one this way :-(