Respiratory ProtectionFiltersABEK1 Gas Filter Special Thread ConnectionP920 is a gas filter ABEK type in class 1, equipped with a special thread for pair use only. It protects from organic and inorganic acid gases and vapours, sulphur dioxide, ammonia and its derivatives where the boiling point is higher than 65°C. Can be used only with P410 Half Mask.Screw-in connectionRetail box which aids presentation for retail salesLightweight and comfortableCE certified