These facepieces can be used with: 2000 5000 6000 and 7000 Series cartridges filters and adapters . N95 P95 or P100 filters can be used in combination with chemical cartridges. Large inhalation and exhalation valves for easier breathing. Speaking diaphragm enhances communication. Has double-flange face seal and six adjustable straps to help provide a secure fit. Can be configured in 11 different modes of operation from air purifying to SCBA