International Transport Regulations 25 Not approved packagings: Where packagings which need not meet the requirements of 4.1.1.3 (e.g. crates, pallets) are authorized in a packing instruction or the special provisions, they are not subject to the mass or volume limits generally applicable to packagings (400 kg or 450 L) conforming to the requirements of Chapter 6.1, unless otherwise indicated in the relevant packing instruction or special provision. 1.4.1 Table with Packaging Codes Kind Material Category Code Drums A. Steel removable head 1A2 B. Aluminium removable head 1B2 D. Plywood - 1D G. Fibre - 1G H. Plastics removable head 1H2 N. Metal, other than steel or aluminium removable head 1N2 Jerricans A. Steel removable head 3A2 B. Aluminium removable head 3B2 H. Plastics removable head 3H2 Boxes A. Steel - 4A B. Aluminium - 4B C. Natural wood ordinary 4C1 with sift-proof walls 4C2 D. Plywood - 4D F. Reconstituted wood - 4F G. Fibreboard - 4G H. Plastics expanded 4H1 solid 4H2 N. Metal, other than steel or aluminium - 4N Packing groups letter: X for packing groups I, II and III Y for packing groups II and III Z for packing groups III only "Drum" means a flat-ended or convex-ended cylindrical packaging made out of metal, fibreboard, plastics, plywood or other suitable materials. This definition also includes packagings of other shapes, e.g. round, taper-necked packagings or pail-shaped packagings. Wooden barrels and jerricans are not covered by this definition. "Jerrican" means a metal or plastics packaging of rectangular or polygonal cross-section with one or more orifices. "Box" means a packaging with complete rectangular or polygonal faces, made of metal, wood, plywood, reconstituted wood, fibreboard, plastics or other suitable material. Small holes for purposes of ease of handling or opening or to meet classification requirements, are permitted as long as they do not compromise the integrity of the packaging during carriage.
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