-If an overpack is used:
• The Proper Shipping Name, UN Numbers, “Limited Quantity” (when applicable), and other required Package use marking appearing on the interior Packages must be clearly visible or reproduced on the outside of the overpack with the additional marking word “OVERPACK” (DGR 7.1.4.1).
• The UN specification markings need not be reproduced on the overpack. The “OVERPACK” marking shall replace the previous statement required and indicate that all Packages contained within comply with prescribe specification, and
• When a consignment consists of more than one overpack, the identification mark (which may be in any alpha-numeric format and the total quantity of dangerous goods, as declared on the Shipper’s Declaration, must be indicated on the overpack to facilitate identification, loading and notification (DGR 7.1.4.3).