M13A1 Filter System
M14 Protective Entrance
M18A1 Gas Filter
M19 Particulate Filter
M20 Protective Entrance
M23A1 Gas Filter
M24 Particulate Filter
M48A1 Gas/Particulate Filter
M8A3 Filter System
M93 Gas Particulate Filter Unit
M98 Particulate/Gas Filter Set
MCFR/CBRN Filter Housing, U.S. Navy