This is a series of models for the IKEA STÖDJA drawer organizers collection.
You'll find the 3 models pictured below, for which I've represented each bin size with a letter, as many share the same dimensions.
I've included both .step and .f3d files.
You can see a picture of the printed profile I used to check the final dimensions. There may be 0.5mm tolerance here and there, as I've found the bottom to not be always perfectly flat.
The author marked this model as their own original creation.