Envelope dimensions are 22.0 inch diameter x 18.0 inch length
NSN 6105-00-682-6969
NSN 6150-01-313-1040
NSN 6645-00-033-8714
NSN 6610-01-215-8489
NSN 5925-00-875-0863
NSN 6620-01-106-3553
NSN 5990-00-011-2994
NSN 6105-00-407-9048
NSN 5999-01-498-1528
NSN 6150-01-287-9831
NSN 5960-01-425-1454
NSN 4140-01-337-7695