Kishigo Fire Resistant Protective Face Mask. Protection from dust in construction, utility and industrial environments. Comfortable protection for nose and mouth. Fully washable. Fabric & mask are USA made. General public, non-medical purposes. One size fits most. Sold in packs of 12. 1 unit = 12 masksNFPA 70E-2012 ASTM F1506 CAT 2Arc Rating/ATPV: Solid=8.9 cal/cm2Fabric dye lot variances may occur and meet luminance factor as stated in the standard.