| PAGES – 80GSM | SPINE SIZE | NO.IN BOX (Steel Crystal & Steel Matt) |
| 1 – 10 PAGES | 1MM | 100 |
| 10 – 25 PAGES | 3MM | 100 |
| 25 – 40 PAGES | 5MM | 100 |
| 40 – 55 PAGES | 7MM | 100 |
| 55 – 75 PAGES | 9MM | 50 |
| 75 – 100 PAGES | 12MM | 50 |
| 100 – 130 PAGES | 15MM | 25 |
| 130 – 160 PAGES | 18MM | 25 |
| 160 – 190 PAGES | 21MM | 25 |
| 190 – 220 PAGES | 24MM | 25 |
| 220 – 280 PAGES | 30MM | 25 |
| 280 – 340 PAGES | 36MM | 25 |
If you are binding anything other than 80gsm paper, you should use the Spine Measurer to ensure correct spine size.
NB: All hard cover books are in boxes of 10
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