Here is my take on AirFilter for Voron 2.4 and other Printers:
2022.4.03 Update: new adapterplate V2.stl
You need:
Based on great work of 0ndsk4 and oab1:
https://github.com/oab1/VoronMods/tree/main/v2.2%20Recirculating%20Filter
The author remixed this model.