A typical fitting used in ventilation systems. By default, it is used to change the direction of ventilation installation by 90° while maintaining the duct diameter.
| r=1,0 d1 | ||
| Nominal diameter | Surface m2 with assembly connector | Weight [kg] |
| 80 | 0,062 | 0,3 |
| 100 | 0,087 | 0,6 |
| 125 | 0,125 | 0,7 |
| 150 | 0,167 | 1,0 |
| 160 | 0,186 | 1,1 |
| 200 | 0,273 | 1,6 |
| 250 | 0,434 | 2,5 |
| 315 | 0,647 | 4,3 |
| 355 | 0,799 | 5,3 |
| 400 | 1,041 | 7,0 |
| 450 | 1,280 | 8,6 |
| 500 | 1,546 | 10,4 |
| 630 | 2,352 | 18,7 |
| 800 | 3,757 | 30,1 |
| 1000 | 5,684 | 50,9 |
| 1250 | 8,803 | 87,9 |