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1. Member countries shall ensure that their designated operators accept, handle, convey and deliver letter- post items.
2. Letter-post items containing only documents are:
2.1. priority items and non-priority items, up to 2 kilogrammes;
2.2. letters, postcards and printed papers, up to 2 kilogrammes;
2.3. items for the blind, up to 7 kilogrammes.
3. Letter-post items containing goods are:
3.1. priority and non-priority small packets, up to 2 kilogrammes;
3.2. items for the blind, up to 7 kilogrammes, as specified in the Regulations.
4. Letter-post items shall be classified on the basis of both the speed of treatment of the items and the contents of the items in accordance with the Regulations.
5. Within the classification systems referred to in 4, letter-post items may also be classified on the basis of their format as small letters (P), large letters (G), bulky letters (E) or small packets (E). The size and weight limits are specified in the Regulations.
6. Higher weight limits than those indicated in paragraphs 2 and 3 apply optionally for certain letter-post item categories under the conditions specified in the Regulations.
7. Member countries shall also ensure that their designated operators accept, handle, convey and deliver parcel-post items up to 20 kilogrammes.
8. Weight limits higher than 20 kilogrammes apply optionally for certain parcel-post items under the conditions specified in the Regulations.