3M™ Secure Click™ Cartridge A1B1E1K1 D8059 is CE approved against certain organic vapours with a boiling point above 65 ?C, inorganic gases, acid gases, and ammonia. Use our cartridges with 3M™ Secure Click™ Reusable Respirators 800 Series. New dual flow cartridges and filters allow for easier breathing. New dual flow cartridges and filters allow for easier breathing, Protects against certain gases and vapours, Quick, simple connection. Simply align the connections and push until you hear a click, Use with 3M™ Secure Click™ Reusable Respirators 800 Series, Can also be used in combination with 3M™ Secure-Click™ Particulate Filters D7900 Series, with a 3M™ D701 Filter Retainer, Swept-back design allows an enhanced field of view and compatibility with welding and grinding shields. CE approved 1 BOX = 8 FILTERS (NOT PAIRS)