My aunt had a door that keeps the flies outside, with an automatic closing system made with the help of a pump. That pump is mount onto the doorframe with a little plastic. This plastic piece broke and she asked me to make a new one. And I made a stronger one that also fits perfectly. This door is from “HR-Vliegenramen & Deuren” (Belgian company).
Version 1: The top part was to thin, it broke again
Version 2: Made the top part wider. Until today it is still holding strong!
The author marked this model as their own original creation.