The IKEA Algot shelving system has baskets that fit the brackets.

This part clips onto the frame of those baskets providing an appropriately angled flat surface for a label to be stuck.

Note

It needs a little force to clip on but this is the third iteration and has worked for all four of my baskets.

Notes:

My slicer settings meant this was actually printed at 100% infill due to the small surface areas involved.

How I Designed This

Customizing

Open the FreeCAD file and change the spreadsheet values to match the label size and width that you are using - the part should update automatically.

Once updated, simply regenerate the mesh in the mesh workbench.