Activated carbon filter for Liebherr "FreshAir" appliances

A refillable activated carbon filter for Liebherr appliances ("FreshAir"). In my case, a refrigerator, but Liebherr seems to use the same FreshAir model in all appliances, at least only one purchasable model can be found on their homepage. The original can be found here for model comparison: https://www.liebherr.com/de-de/p/ca-122567-2451623

Since I wasn't willing to pay €18 (non-original) to €27 (original) for a cheap item (seriously, wtf?!), I designed a refillable version. I already had activated carbon for my home printer.

The holes in the model are 2x2 mm in size, so activated carbon with a correspondingly larger grain size (e.g., 3mm and up; those in the picture have a size of 3.4 - 4.5 mm according to the packaging) can be used. The height of the "filling drawer" is 6.75mm, so larger pieces of coal than mine, such as pellets, should also fit.

It fits perfectly for me. It sits firmly (wedges itself in), like the original, but no force is required.