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.