Shelf depths

So there is currently a standard depth shelf these are 380mm deep and a slim line shelf depth these are 322mm deep.
The shelfs in general have 4 options.
1. "Flat" shelfs these are flat shelfs with 2 pins on the front of the shelf. (used to take any standard box these are available in all widths)
2. "Standard" shelfs to take the tool box only\, these have holes needed to take the relevant boxes. (no mortice holes to mount drawer sides)
3. "Standard depth" shelfs to take the tool box and standard depth drawer components. (these do not have the mortices to mount the extra deep drawer parts)
4. "Extra deep" shelfs have both standard depth and extra deep options for drawers. Also include the holes in the shelf for the tool boxes (include everything above)