Used to hold 3M™ Secure Click™ Particulate Filters D7925 or D7935 in place on 3M™ Secure Click™ Cartridges D8000 Series. For use with 3M™ Secure Click™ Respirators 800 Series. Designed to hold 3M™ Secure Click™ Particulate Filters D7925 and D7935 Component works with 3M™ Secure Click™ Respirator 800 Series and 3M™ Secure Click™ Cartridges D8000 Series Refer to the D7925 or D7935 Filter User Instructions for further information. The filter works with a 3M™ Secure Click™ Respirators 800 Series. Connection system works just like a seat belt. Simply align the connections and push until you hear a click. The filter is suitable for use for environments containing solid and liquid particles.