This is a remix of an original model by koeut1 on thingiverse. I wanted to make one whose back was shorter to reduce print time and put more than 1 on the wall. If you just scale it the front becomes shorter as well. I also wanted it longer so I made one that is 11 inches which fit my needs and is the largest I could print on my P1P.
Theirs a version with screw holes and one without. You can just attach to the wall using 3M mounts. I found 15% infill is more than enough to make it feel strong