This model is a spacer for Blum CLIP mounting system (Blum 173L6100). It fully repeats the wingplate shape and also have a border for convenient mounting.

The spacer height is 9 mm. If you want less height spacer, you can simply dive the model by some mm under the table in your slicer. If you want more - slightly increase Z-scale.

I've made the thing from PET-G and it fitted tightly. If you use a more shrinkable plastic like ABS, consder increasing the XY-scale a bit.