Quantity: 1 PairFor Use With 3M Half And Full Facepieces 6000, 7000 And FF-400 SeriesNIOSH Approved Against Certain Acid GasesSwept-Back Design Allow An Enhanced Field Of View And ComfortUsed In A Variety Of Applications Including Chemical Manufacturing, Glass Etching, Pulp And Paper, And LaboratoriesWhen Properly Fitted, Helps Provide Respiratory Protection From Chlorine, Hydrogen Chloride, Sulfur Dioxide, Chlorine Dioxide, Or Hydrogen Sulfide