European (ISO) paper & envelope sizes
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* inch sizes approximate
† C4 size = Large Letter postage rate
envelope sizes
|
millimetre |
inch* |
C6: |
114 × 162 ‡ |
4½ × 6½ |
DL: |
110 × 220 |
4¼ × 8¾ |
7 x 5: |
134 × 184 |
5¼ × 7¼ |
C5: |
162 × 229 |
6½ × 9 |
C4 †: |
229 × 324 |
9 × 12¾ |
* inch sizes approximate
† C4 size = Large Letter postage rate
‡ some papers 111 x 159
envelope styles
banker - half-diamond shape flap opens on long edge (greetings card style)
pocket - parallel flap opens on short edge
wallet - parallel (or occasionally shallow diamond) flap opens on long edge
Please note that the exact shape of the envelope opening varies between ranges and between sizes within some ranges.