"THIS NSN IS USED TO PURCHASE A MINIMUM OF 20 TO A MAXIMUM OF 59 CONTAINERS. TO PURCHASE A MINIMUM OF 1 TO A MAXIMUM OF 19 CONTAINERS USE 3439-01-380-2126. TO PURCHASE 60 OR MORE CONTAINERS USE 3439-01-407-5053. CERTIFICATION B50TF190-S3, CLASS A AND CP 6021"