
All measurements in millimetres.
| "Z" Purlin | T | J | K | L | M |
| Z 70 | 1.0 | 70 | 46.5 | 43.5 | 12.5 |
| 1.2 | 70 | 47 | 44 | 12.5 | |
| Z 75 | 1.0 | 75 | 44 | 41 | 12.5 |
| 1.2 | 75 | 44.5 | 41.5 | 12.5 | |
| 1.5 | 75 | 44.5 | 41 | 13.5 | |
| Z 100 | 1.0 | 102 | 53 | 49 | 12.5 |
| 1.2 | 102 | 53 | 49 | 12.5 | |
| 1.5 | 102 | 53 | 49 | 13.5 | |
| 1.9 | 102 | 53 | 49 | 15.5 | |
| Z 150 | 1.2 | 152 | 65 | 61 | 15.5 |
| 1.5 | 152 | 65 | 61 | 16.5 | |
| 1.9 | 152 | 65 | 61 | 17.5 | |
| 2.4 | 152 | 65 | 61 | 19.5 | |
| Z 200 | 1.5 | 203 | 79 | 74 | 15 |
| 1.9 | 203 | 79 | 74 | 18.5 | |
| 2.4 | 203 | 79 | 73 | 21.5 | |
| Z 250 | 1.9 | 254 | 79 | 74 | 18 |
| 2.4 | 254 | 79 | 74 | 21 | |
| Z 300 | 2.4 | 300 | 100 | 93 | 27 |
| 2.9 | 300 | 100 | 93 | 31 | |
| Z 320 | 2.4 | 320 | 90 | 83 | 27 |
| 2.9 | 320 | 90 | 83 | 31 |