Air that is used exclusively for human respiration.
NSN 5920-01-109-3117
NSN 5855-00-337-3679
NSN 5950-01-229-4724
NSN 5835-01-485-0210
NSN 4140-01-271-6960
NSN 6145-01-351-8706
NSN 5975-00-992-8396
NSN 6240-01-480-8996
NSN 6135-01-071-4410
NSN 6130-00-639-0666
NSN 5895-00-244-0943
NSN 5950-00-763-2342