| Minimum Collector Feeder Duct | Collector | ||||||
| Flutes | A | B | C | D | E | ||
| Distance from Centreline (m) | 15.5 | 19.0 | 22.5 | 26.0 | 30.0 | ||
| Collector Section | 1 | 1 to 5 | 15.0 | 10.4 | 9.1 | 8.0 | 5.3 |
| 2 | 6 | 13.9 | 12.8 | 11.8 | 8.3 | ||
| 3 | 7 to 9 | 32.3 | 40.1 | 38.0 | 35.0 | 24.1 | |
| 4 | 10 to 20 | 73.5 | 83.0 | 72.6 | 63.1 | 42.9 | |
| 5 | 21 to 41 | 84.2 | 73.8 | 50.3 | 31.2 | ||
| Main Duct Minimum Diameter (mm) | 215.5 | 180.6 | 135.6 | 94.4 | 50.2 | ||