This is the copy of original Geberit d90 shower drain comb.
In one of our showers, this comb was missing, so I decided to design one. Before we tried some other solutions, such as plastic, metal mesh baskets like those for kitchen sink, but they did not work properly (clogging), so finally I made a comb based on the original Geberit comb from another shower.
It snaps well on the existing Geberit siphon opening.
It works very well, protecting hair from clogging the siphon and overflowing the shower tray.