| Hub Series | Hub Diameter |
|---|---|
| H Series Fans | |
| H6 | 3.82″ |
| H8 | 5.28″ |
| H10 | 6.77″ |
| H12 | 8.11″ |
| H14 | 9.53″ |
| Z Series Fans | |
| Z5 | 5.71″ |
| Z6 | 7.01″ |
| Z7 | 7.32″ |
| Z8 | 10.47″ |
| Z9 | 7.87″ |
| Z12 | 11.02″ |
| Z16 | 14.76″ |
| W Series Fans | |
| W3, W4, or W5 LP | 7.87″ |
| W5 or W5 HP | 10.79″ |
| W6 or W6 HP | 10.79″ |
| W8 or W8 HP | 14.96″ |
| W10 | 18.50″ |
| W13 | 24.80″ |
| G Series Fans | |
| G3 & G5 | 14.96″ |
| G6 | 18.90″ |
| G8 | 27.40″ |