Channel
| description | kg/mtr |
|---|---|
| 76 x 38 x 7 | 6.7 |
| 100 x 50 x 10 | 10.2 |
| 125 x 65 x 15 | 14.8 |
| 150 x 75 x 18 | 17.9 |
| 150 x 90 x 24 | 23.9 |
| 180 x 75 x 20 | 20.3 |
| 180 x 90 x 26 | 26.1 |
| 200 x 75 x 23 | 23.4 |
| 200 x 90 x 30 | 29.7 |
| 230 x 75 x 26 | 25.7 |
| 230 x 90 x 32 | 32.2 |
| 260 x 75 x 28 | 27.6 |
| 260 x 90 x 35 | 34.8 |
| 300 x 90 x 41 | 41.4 |
| 300 x 100 x 46 | 45.5 |
| 380 x 100 x 54 | 54 |
| 430 x 100 x 64 | 64.4 |
St. Johnston, Co. Donegal, Ireland