2020 20XX Vibration damper one side (low height)

Since I have very little space in my enclosure, I needed very low feet. So I created 3 variants that don't need much height. I also add my FreeCad files.

**update**
I printed the first variant and it works fine. Infill 60%. There is a noticeable reduction in loudness. Above all, the low hum has reduced significantly.