| Soprano | Full length of 21 inches, scale length of 13 inches, and between 12-15 frets. |
| Concert | Full length of 23 inches, scale length of 15 inches, and between 15-20 frets. |
| Tenor | Full length of 26 inches, scale length of 17 inches, and between 15-20 frets. |
| Baritone | Full length of 30 inches, scale length of 19 inches, and at least 19 frets. |