Designed to fit cone shaped flower pot with 11cm height, 8.9cm bottom diameter, 10.7cm top diameter and a lip on top with 11.4cm diameter. Left 1.5cm under the plastic insert for excess water to avoid root rot.
Printed nicely, 130g, 5h print with 0.4 nozzle, PLA, fits nicely.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/7Dx3XF9xxss