I used @Luke's 3D fantastic paper towel holder to make a version for french cleat system which is used very often in tool shops or custom van builts. And one more version with 9mm holders for wood panels like I have in my custom van built. Thanks for providing the Fusion file.

The french cleat version is with a small nose to hold them in place and it's optimized for 55mm french cleat panels. If you have another size you can adjust it directly in the slicer by removing the nose and adding a hole for screws or another nose as you need it.