Combination /Filter, NIOSH Rating Ammonia (AM), Chlorine (CL), Chlorine Dioxide (CD), Formaldehyde (FM), Hydrogen Chloride (HC), Hydrogen Fluoride (HF), Hydrogen Sulfide (HS), Methylamine (MA), Organic Vapor (OV), P100, Sulfur Dioxide (SD), Magenta, Olive, Compatible with Brand and Series 3M 6000 Series, 3M 7000 Series, 3M FF-400 Series, Respirator Type Air Purifying Respirator, Respirator Connection Type Bayonet, Package Quantity 2