It consist of 12 pad and a frame to hold the pads together. Print 4 corners and 12 of the long pieces. You will also need to buy 3 packs of vibration pads. I would advise to remove the feet from the printer so that there will be more surface contact between the pads and the printer.
You should get these pads.
https://www.amazon.com/gp/product/B00BVEMLR4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The author marked this model as their own original creation.