This is a Silica Gel Holder for Dry Boxes. It is designed for reusable Silica Gel with diameter 2mm-4mm, for example this:

https://www.chemdiscount.de/chemikalien-von-a-bis-z/silica-gel/silica-gel-lose/silica-gel-lose-orange-mit-farbindikator/1kg-silica-gel-mit-orangem-indikator.html

You need to glue 12 5x5mm magnets in the holes in the main body and the lid.

The wallholder is designed to be glued to the wall of dry boxes with these glue stripes:

https://www.amazon.de/gp/product/B098XGZ1H4/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1

Than you can put the silica gel holder in the wallholder. (see pictures)

If you have a SUNLU S2 you can dry your silica gel in the holder:

https://makerworld.com/en/models/165606#profileId-201584

Print Option:

Bambu Lab PLA

15% Infill

If you have any questions, feel free to ask.