Standard frame sizes
These are the standard sizes we have used on a lot of our mounts. You can download a more comprehensive list here too.
| Imperial sizes (inches) | Metric sizes (mms) |
| 6 x 4 | 178 x 128 |
| 7 x 5 | 153 x 102 |
| 10 x 8 | 254 x 203 |
| 10 x 12 | 254 x 305 |
| 11 x 14 | 279 x 356 |
| 12 x 16 | 254 x 406 |
| 14 x 18 | 356 x 457 |
| 16 x 20 | 406 x 508 |
