ᐅ Ikea KALLAX: Dimensions of Individual Units

I know this isn’t exactly assembly help, but I don’t know where else to ask.

I really like Kallax, but I want individual units with just one compartment each, which they don’t offer. So now I want to build the carcass myself and install the Kallax inserts (doors or drawers) that I’ve already bought.

I need the following dimensions:
1) The internal dimensions of a compartment (I calculated this once assuming the divider panels are 19 mm (0.75 inches) thick and came up with an internal compartment width of 331 mm (13 inches) and an outer panel thickness of 4.5 mm (0.18 inches) — is this correct?)

2) The distance from the front that the walls of the insert are set back. For marking, the assembly aid 131351 is used (this is what the assembly instructions for the inserts say), but this isn’t included in the package.

Thank you very much
Haidi

However, I would like to have individual units (that is, units with just one compartment each), which are not available.

And what about the Kallax:

There seem to be differences in the offerings for Germany and Austria. I haven’t found anything online either, including in Austria...

Yes, the product range is not the same in all countries.

I have now ordered the boards for an internal dimension of 33.5 cm (13 inches) – this comes from the measurements of the inserts (I should have thought of that earlier). Due to staff illness at my supplier, it will be next week before I receive them.