N95 Particulate Respirators Collapse-resistant Dura-Mesh(®)shell lasts longer so workers use fewer masks. Shaped for comfort with molded contour nose bridge. Seals easily and comfortably without a metal noseband. NIOSH certified to have 95% filter efficiency level or greater against particulate aerosols free of oil up to 10X PEL. Time use restrictions may apply. TC-84A-0327. Sold 20 per package. Meets 42 CFR84 standard.