Engineered Filtration Systems can provide custom cut M16 filter media. The media is precision cut to your exact specifications. So, you can use this media for creating DIY face coverings in any shape and any size.
EFS’s M16 filter material is made up of non-woven, multi-layer polyester poly-carbonate media. Also, It is pinsonically welded to join the 3 layers of filter media together.
It has a MERV 16 ePM 2.5 90+ efficiency rating and level 4 microbial resistance.