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3 ply Type IIR medical grade face masks are not to be confused with Type l or Type ll please go to the accreditation section of the website for an explanation of the different types of masks
Material Specification of 3 Ply
The first ply is
25gsm non woven.
The second ply is 25gsm of melt blown.
The third ply is 25gsm non woven.
filtration efficiency is ≥ 98%