3M™ Secure Click™ Cartridge A1B1E1K1 D8059 is AS/NZS 1716 approved against certain organic vapors (boiling point above 65°C), inorganic gases, acid gases and ammonia. Use with 3M™ Secure Click™ Reusable Respirators HF-800SD 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 cartridge connection. Simply align the connections and push until you hear a click Use with 3M™ Secure Click™ Reusable Respirators 800 Series. Swept-back design allows an enhanced field of view and compatibility with welding and grinding shields Gas & Vapour Filter D8059 protects against organic gases and vapours (boiling point above 65°C), inorganic gases, acid gases and ammonia Suitable for use with 3M™ Secure Click™ Reusable Respirators HF-800SD Series. . These cartridges can also be used in combination with 3M™ Secure-Click™ Particulate Filters D7900 Series with a 3M™ D701 Filter Retainer.