These sound dampening feet slip over the Prusa XL's feet and are sized for 1.5" x 0.5" Sorbothane Discs.
The 50 duro pads I chose were rated for 10-23 lbs / 4.54-10.43 kg per pad. The XL weighs somewhere between 25 and 35 kg. I plan on putting 2x 2-pads in the back and 2x 1-pads in the front.
50 Duro 1.5" x 0.5" Sorbothane Discs:
https://www.amazon.com/Isolate-Sorbothane-Vibration-Isolation-Circular/dp/B019O5YFQ6
50 Duro 1.5" x 0.5" Sorbothane Discs with 3M Adhesive:
https://www.amazon.com/Isolate-Sorbothane-Vibration-Isolation-Circular/dp/B019O5RJN2
Sorbothane datasheet:
https://www.sorbothane.com/wp-content/uploads/Sorbothane-SPG.pdf
It is recommended that you print from the XL Damper Feet 3MF file due to how the model uses supports.
The author remixed this model.
I slightly resized the model to fit Sorbothane feet. I also reduced the shroud to allow the Sorbothane discs to squish out.