Product Features: 3m 5911 P1 Dust and Fog Mask Filter Pad3m 5911 P1 Dust and Fog Mask Filter Pedigas, Steam and Particulate Filter (P1) Protects Against Solid and Liquid Particles. Extremely Light Low Breathing ResistanceExcellent Field of View3m™ 6000 and 3m™ 7000 Series Half Suitable for Face and Full Face Masks. 1 Pack Packaging Content Includes 2 Filters.