https://bimmertips.com/cabin-air-fil...ement-bmw-e36/
https://chrisparente.com/2013/09/28/...er-bmw-e36-m3/
and youtubes
https://www.youtube.com/watch?v=UjSnUgC4cWI
https://www.youtube.com/watch?v=PC2FmSCIbRo