Damper for full extension Ikea Faktum

Except for the oven drawer, all currently have the rails with the round dampers. Otherwise, you could try using carcass rails with a nominal length 2 cm longer. It will probably work and the extension will at most come out a little further, but I can't say that for sure. Also, new holes will probably have to be drilled in the carcass.

So, I bought a single drawer. Unfortunately, I couldn't use my old one. Here, everything except the carcass has to be new.

Unless you had bought the oven drawer, which would be worthwhile in terms of price for the two lower drawers. You could then sell the oven drawer with the old rails on eBay.