Current standard from Convention – Prot. Art. R XV; Art. 17-104, 17-105 140 – Volume II:
Quote:
Article 17-105
Limits of size and weight for small letters (P) and large letters (G)
1 For the classification of items based on their format, the limits of size and
weight of small letters (P) shall be as follows:
1.1 minimum dimensions: 90 x 140 mm;
1.2 maximum dimensions: 165 x 245 mm;
1.3 maximum weight: 100 g;
1.4 maximum thickness: 5 mm.
2 For the classification of items based on their format, for items that are not
small letter (P) format items, the limits of size and weight of large letters (G)
shall be as follows:
2.1 minimum dimensions: 90 x 140 mm;
2.2 maximum dimensions: 305 x 381 mm;
2.3 maximum weight: 500 g;
2.4 maximum thickness: 20 mm.