F1 Mask Filter

F1 Mask Filter consists of two layers: particulate filter and Active Carbon Element Best-in-class filtration with 360-degree seal Active Carbon Element reduces odors Surpasses the N95 standard, filtering up to 99.9% of particulates down to .1 micron in size (400 times smaller than a human hair) Independently tested at Nelson Laboratories in Salt Lake City, UT Common uses: low intensity dust/fumes/odors/smoke/pollen Choose the filter to match mask size