Dangerous Goods by Road
the letters "t" or "w" may follow the large packaging code. the letter "t" signifies a large salvage
packaging conforming to the requirements of 6.6.5.1.9. the letter "w" signifies that the large
packaging, although of the same type indicated by the code, is manufactured to a specification
different from those in 6.6.4 and is considered equivalent in accordance with the requirements
in 6.6.1.3.