"THIS NSN IS USED TO PURCHASE A MINIMUM OF 1 TO A MAXIMUM OF 9 CONTAINERS, TO PURCHASE A MINIMUM OF 10 TO A MAXIMUM OF 29 CONTAINERS USE NSN 3439-01-407-6921, TO PURCHASE A MINIMUM OF 30 OR MORE CONTAINERS USE NSN 3439-01-407-6934. CERTIFICATION: PWA1320F/CPW220; DMR33012; EMS38850GM/EMS52423AA CL.VII; USAF 67A 60753A."