Spacer for kitchen radio soundmaster IR1500SI

The kitchen radio Soundmaster IR1500SI can be mounted under your kitchen cupboard. They include some spacers to adjust the distance, but they didn't work for me, so I designed my own spacer. I uploaded the scad file where you can change the height of the spacer according to your cupboard. The plate is screwed to your cupboard. The columns are arranged to fit the holes of the mounting plate that comes with the radio