• Special markings requirements are in place for use of overpacks and fumigants.

Overpacks

Each overpack:

• Must be marked with the proper shipping names and identification numbers of the materials contained within, unless markings on the inside packages are visible;
• That contains packages subject to orientation marking requirements must be marked with orientation arrows on two opposite vertical sides, with the arrows pointing in the correct upward direction;
• Must be marked with the word “OVERPACK” indicating that the inner packages comply with prescribed specifications (when specification packagings are required), unless specification markings on the inside packages are visible;
• Containing packages of limited quantity materials must be marked “OVERPACK,” unless all required markings are visible through the overpack; and
• Containing excepted quantities must be marked with the required markings for the inside packages, unless all required markings are visible through the overpack. Overpacks of excepted quantities are not required to be marked “OVERPACK.”

Fumigant marking

Each truck body or trailer, rail car, or freight container containing lading that has been fumigated or treated with any material, or is undergoing fumigation, must have a “FUMIGANT” marking displayed so it can be seen by any person attempting to enter the vehicle or container.

The printing on the “FUMIGANT” marking must be black on a white background. The size of the white background must be at least 15.75 inches (400 mm) wide and at least 11.8 inches (300 mm) high. The width of the border must be at least 0.08 inches (2 mm). Text on this marking must be at least 0.98 inches (25 mm). The technical name of the fumigant must be entered in the appropriate place (*) on the marking.

The “FUMIGANT” marking must be displayed until the truck body or trailer, rail car, or freight container has been completely ventilated.