F2 High-Flo Filter is made up of 2 layers of particulate filters. Capable of trapping particulates down to .1 microns. Does not contain an active carbon element, eliminating the filtration of fumes and odors (above general inhalation standards). 99.9% effective - promotes 40% better breathability than standard F1 filter.

Extra Large Size, 3 filters per pack.

HIGH FLOW FILTER PROMOTES BETTER BREATHABILITY.
FOR HIGH INTENSITY, DUST/POLLEN/COLD AIR
NOT FOR FUMES/ODORS