The Dangerous Goods Regulations of the International Air Transport Association (IATA) require the Shipper of a dangerous good to mark the package to provide information regarding the dangerous goods inside. When applying markings to a dangerous goods package, it is necessary to know the minimum size requirements for that marking. This simple table illustrates the size requirements for all regulated markings in the IATA DGR for a range of packaging sizes and includes the reference to the DGR so you can confirm my information.

1. Package Size
Marking Size (7.1.4.4) Other Markings
ID Number Use Markings
Environmentally
Hazardous Substance
(7.1.5.3.3)
Ltd Qty
(7.1.4.2)
Specification
Packaging
(6.0.4.1)
Salvage*
(7.1.4.3)
Overpack*
(7.1.7.1)
All packages ≥12 mm high ≥12 mm high 100 mm x 100 mm 100 mm x 100 mm ≥12 mm high
≥12mmhigh
≥12mmhigh
≤30 L capacity
≤30 Kg max net wt.
≤60 L water capacity
(cylinders)
≥6 mm high ≥6 mm high
May be reduced if
clearly visible.
≥50 mm x 50 mm if
clearly visible
≥6 mm high
≤5 L capacity
≤5 Kg max net wt.
Appropriate
size
Appropriate
size
* Effective as of January 1, 2016
Size Requirements for Markings in the IATA Dangerous Goods Regulations