The full list of ISO envelope sizes is shown here. All are from the B or C sheet sizes with the exception of one designated DL (DINLang)
Size |
millimeter |
| C3 | 324 X 458 |
| B4 | 250 X 353 |
| C4 | 229 X 324 |
| B5 | 176 X 250 |
| C5 | 162 X 229 |
| B6 | 125 X 176 |
| C6 | 114 X 162 |
| DL | 110 X 220 |
