Beeswift 3M D8051 Secure Click A1 Filter Dual FlowThe 3M Secure Click Cartridge A1 D8051 is CE approved to protect against certain organic vapours with a boiling point above 65 C. Designed for comfort and ease of use, it works seamlessly with the 3M Secure Click Reusable Respirators 800 Series. Key Features: Protects against organic vapours with a boiling point above 65 C. New dual flow cartridge design for easier breathing. Quick, secure connection simply align and push until you hear a click.