3M Secure Click Particulate Filter P2 R D3128 is CE approved for environments containing certain particles. Our filter can also be used for nuisance level organic vapour relief and for ozone protection up to 10 x WEL. New dual flow cartridges and filters allow for easier breathing, Protects against particulates with nuisance level organic vapour/acid gas relief, Protection against ozone up to 10 x Workplace Exposure Limit, Quick, simple 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 comfort, Use for protection in hazardous environments, CE approved 1 BOX 20 FILTERS (NOT PAIRS).