FRITZ!Box 4060 Mount

I enlarged the side brackets and removed the screw holes, I glued the mount to a sideboard. The rear part was enlarged and the opening was widened, anyway I needed more space during installation. I am a complete newbie, so please don't be angry if you look at/edit the Tinkercad file... ;-)

Tinkercad file, pretty rough so be warned:
https://www.tinkercad.com/things/affIiYRmRy2?sharecode=RrmBzimt89ZPFjPTU6CpIYgahHlheueiLI3O6oeaf50