all of our cabinet drawers (47 apt. units)- built in 2002 have drawer track back plates with the wording as follows- M.I. germany 543.000, 10.00.( fotos of front and back attached- the drawer tracks are white painted metal with the name uni-frame 2033/597 (23 1/2").
The ends of the tracks slide into the front of the back plate to be secured in place.
We are looking for the plastic back plates and perhaps the tracks as well.
Thanks;
Nathan