Below you will find 3M Secure Click™ reusable half piece respirators and filters. The reusable half masks of this series provide reliable protection against many kinds of gases, vapors and particulates when used with appropriate filters. Two dual flow cartridges used with the half mask provide four airflow paths for easier breathing. Unique filters’ connection system requires only aligning the connections and pushing to hear a click. Swept back filter design for better compatibility with welding and grinding shields. Patented Silicone Flex-Joint Faceseal provides a softer feel for more comfort on the wearer’s face. The user can easily check how secure the face seal check is by just pushing the Seal check button. The speaking diaphragm additionally utilized in HF-800SD mask provides easier communication while working.