Sold in packs of 20.
These filters are engineered using patent-pending Nanofiber technology. They are highly-efficient (up to 95%) on sub-micron particles, including bacteria and viruses.
Constructed from polypropylene spunbond nonwoven with a Nanofiber fine filtration layer and surface layer of polyester nonwoven. Made in Canada.
When compared, the material far exceeds standard cloth and fabric materials in efficiency percentage.
4.75 in. x 3.25 in. Filters fit in all adult Alberta Apparel Non-Medical Face Masks. Refer to the product image to know which direction your filter should face inside your mask.
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