Here's basicaly everything you might need to know about sound reproducers: http://www.victor-victrola.com/Soundboxes.htm.
For the basis of this image, i used a line drawing from a very old publication that I found on a german site explaining how to repair and restore these sound reproducers.
| S | M | L | XL | 2XL | 3XL | |
|---|---|---|---|---|---|---|
| Width, in | 17.99 | 20.00 | 22.01 | 24.02 | 25.98 | 27.99 |
| Length, in | 27.99 | 29.02 | 30.00 | 31.02 | 32.01 | 32.99 |
| Sleeve length, in | 8.90 | 9.17 | 9.45 | 9.72 | 10.00 | 10.39 |