Envelope Specifications and Envelope Size Standards
The usual Chinese envelope size
There are 13 popular names for Chinese envelope sizes, including small, medium, large, and 1 to 10. The details of the numbers and sizes compiled by the Biyin Bazaar are as follows:
S: 176*110mm, M: 220*110mm, L: 324*229mm.
No. 1: 165*102mm, No. 2: 176*110mm, No. 3: 176*125mm, No. 4: 208*110mm, No. 5: 220*110mm, No. 6: 230*120mm, No. 7: 230*160mm, No. 8: 309*120mm, No. 9: 324*229mm, No. 10: 458*324mm.
Differences between Chinese and Western envelope styles
The Chinese-style envelope is a vertical envelope with a short side opening and a tongue on the right side of the front; Western-style envelopes are horizontal envelopes with long side openings and tongues above the front.
Comparison of commonly used Chinese envelope sizes with Western envelope sizes
Chinese No. 3 (176*125mm large 16 open), Western No. 3 (162*114mm positive 16 open).
Chinese No. 5 (220*110mm positive 8 open), Western No. 5 (220*110mm positive 8 open).
Chinese No. 7 (229*162mm positive 8 open), Western No. 7 (229*162mm positive 8 open).
Chinese No. 9 (324*229mm positive 4 open), Western style (No. 9 324*229mm positive 4 open).
other
A domestic envelope is an envelope used to send mail within the country, and an international envelope is used to send a letter to a foreign country or region. Envelopes should be horizontal, with the front of the envelope on the right or top of the front of the envelope, and the front of the international envelope on the top of the front of the envelope. The domestic envelope size standards are as follows: No. B6 (No. 3): 176*125mm (No. B6 is consistent with the current No. 3 envelope); DL (No. 5): 220*110mm; ZL (No. 6) 230*120mm; C5 (7): 229*162mm; C4 (9): 324*229mm. The international envelope standard is basically the same as the domestic size standard, but on this basis, a C6 number is added: 162*114mm.