I actually created a spreadsheet that calculates the required height of the side pieces for you.
First you enter the quantity and model of Systainer you plan to store. I had enough to fill one cabinet sixty inches high so it's a custom fit. If you only had a few and wanted to plan for future storage you could just enter additional counts for the future systainers.
You then enter the thickness of your material, in my case it was 3/4" melamine and how many cross members you are planning. By cross members I mean the top, bottom, and any other supporting cross member. Mine had two sheets stacked on the bottom and one on top for a quantity of three. I stacked two on the bottom to add weight and to attach the castors.
You then enter a bottom gap number which represent the distance from the bottom of the cabinet to the top of the drawer bottom for that first drawer, mine was 1"
You then enter the lost space beteen the top of any given systainer and the top side of the next self bottom. I assembed my sysport from the bottom up using the actual sysports as supports and drawer guide installation support, I'll explain this process in more detail if anyone wants but you basically install the bottom drawer and place the systainer in the drawer. You then place a piece of plywood cut to fill the sysport on top of the systainer and screw the next set of slides to the sides flush with the top of the plywood. in my case I used 3/4 play. The mating slide portion for the next drawer was screwed to the side of the drawer and spaced up from the bottom by another piece of 3/4 plywood. All drawer runners are then level and you work your way up.
The spacing gap is the distance between the top of a systainer and the bottom of the drawer above. It is a calculation based on the spacers you use and how you build your drawers.
Here is an example:
I mounted drawer one in the sysport and for this to work the inside floor of the bottom drawer must be the same height as bottom gap measurement that you entered.
Example
After the first drawer is mounted I placed a 3/4 piece of melatine on top of the systainer. So my spacing gap is now +.75. And I mounted my slides to the cabinet sides sides.
Next I mounted my slide portion to the actual drawer by placing the drawer on a flat surface and using a spacer to raise the drawer slide up from the bottom by 3/4 of an inch. Remember that the slide portion on the drawer is not as tall and fits within the slide portion mounted to the cabinet side. The difference between these is 1/4" so the drawer actually hangs below the mount on the cabinet side creating a perfect 1/4" spacing from the top of the systainer to the bottom of the exposed drawer side.
To this 1/4" you need to add the height that is gained by your drawer construction method. I cut a 1/4" groove and placed it 1/4" up the side of the drawer adding 1/2" to my spacing gap. This creates a height increase of 3/4" or .75, I used .875 as my gap entry allowing myself margin for error but it would be required and I probably won't again.
After you have entered all these numbers the spreadsheet will tell you exactly how tall to cut your sides for a custom fit, in my case 58.625 inches.
This could easily work with mm as well. it all depends on what you enter, inches gets you inches, mm gets you mm.
I hope all this makes sense and I can post some pictures if anyone wants/needs them. or wants a version of the spreadsheet.
The next version of the spreadsheet will be setup to work with the 32mm concept.