Download Fusion 360 files, in the Design/Modify drop down select paramaters. All the editable features are in the User Parameters, named and with a general description of what they reference or are derived. I have included some examples that i made for myself and will update the library of stls as i create my own base on what i make.
You can make square or triangular add ons for your own style toolboox. Current defaults are for Craftsman type tool box and its drawer dimensions.
The author marked this model as their own original creation.