Air that is used exclusively for human respiration.
NSN 5985-00-869-1041
NSN 6110-01-259-0267
NSN 6105-01-468-2090
NSN 5925-00-517-8512
NSN 5985-00-281-0810
NSN 5960-00-178-0968
NSN 5905-00-013-1250
NSN 5998-01-381-2159
NSN 6110-00-573-7553
NSN 6150-01-173-3175
NSN 4140-01-358-5141
NSN 6105-01-346-2794