I couldn't print the original part with my printer, so i drew it up in Fusion 360, so that i could split it op into 4 parts. The original has holes for magnets, which i don't intent to use,  so i didn't model them. If i'm needing som kind of fasteners in the future, i think i will use a pice of double-sided adhesive.

The parts are glued together with ca-glue.

The Helmer Drawer Unit has the IKEA Item-Number: 102.510.45