3M D3135 SECURE CLICK P3 R FILTERUOM: PK 20 Description: 3M Secure Click Particulate Filter P3 R D3135 is our CE approved filter for environments containing certain particles.* New dual flow cartridges and filters allow for easier breathing* Protects against particulates * 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