Spacer that sits under your 3107 Series 7 chair or 3100/3101 Ant (fits both the 3 and 4 leg ones). The spacer protects the structure of the chair between the seat and the legs, so that your chair is not damaged by uneven weight distribution. The spacer is available in gray and black.
After that, the product is sold out.
Please note that the images are indicative. Colors may differ from reality.