Shelf bracket - French Cleat Mount Multiple Sizes

This is a clear modern Shelf bracket with a french cleat mounting system provides a strong mount and hides the mounting screws. Updated 01/08/2025: Added a PS1 Print Profile that includes sizes from 3 1/2 “ to 9”. These are in imperial measurements since that's how the boards at Home Depot and Lowes are labeled here in the US. I can do one in Metric units if there's enough interest and someone tells me what common sizes should be. I printed and tested every size in this file but please let me know if you find any issues I may have missed. Update : I have received a number of comments regarding how to attach the shelves. I originally designed this for my personal use and used 3M double sided tape to mount the shelves as I did not want any exposed mounting hardware. I'm not sure what design changes would work for all types of shelving materials, such as glass and wood but the 3M tape works well.