Really Useful Parametric Box

I am a miniature modeller and I use small boxes to keep the loose pieces of my models organized. I call them sub-assembly boxes. I needed a way to create different size boxes for different model sizes easily and so I built a parametric box. There is sufficient clearance (configurable) between the lid and the box to allow for a friction fit. [UPDATE] Added a second file for building a box with sections. If you want a single larger box rather than many small ones this is the file to use.