Looking for replacement rails for Ikea Pax folding doors

I am urgently looking for 2 of the white rectangles with the rollers that fit on the rails for the folding doors. I have such an old cabinet but Ikea no longer supplies spare parts for folding doors. If there are also [hosenstangenschinen] for pulling out available, I would also like to purchase them.

Have you ever checked if there is a manufacturer name on the fitting? I don't think it is unlikely that the folding door fitting is from Hettich or another manufacturer.

phew, this will be hard. My wife and I searched for almost 2 years for an extension for our folding door cabinet with a body of 2.22m and luckily found one.

The old cabinet has a black guide and the "new" one has white. It says (I dismantled one on purpose) Hettich on it as the name. Unfortunately, no number etc.

Maybe inquire at Hettich with a picture - I unfortunately have no spare parts and the cabinet should last a few more years with us.

Regards

Edit: there are still numbers on the side: 110 and below 10779