RZ MASK F3 Mask Filter High Flow 3 Pack Large FL-20E:643620

F3 premium RZ filter, combines the best technologies from the F1 and F2 filters, High Flow + Active Carbon Filter, First layer is a High-Flow Electrostatic Filter, trapping particulate down to .1 micron in size (with 40% better breathability than the RZ standard F1 filter), Second layer is an Active Carbon Element, which helps to reduce harmful fumes and odors, 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 use: High intensity, Dust/pollen/smoke/fumes/odors, Choose the filter that matches mask size