Filti filtration material laser cut for Signature masks - 20 pieces
Filti material is laser cut to match the size of your Signature composite mask.
Filti material contains no fiberglass. It is a spun non-woven material with a polyester surface layer.
Filti material is tested to be MERV 16 compliant - this means it will filter 95% of particles as small as 0.3 microns (human hair for reference is about 50 microns) and yet is still very breathable material.