It is used to prevent basalt fibre from rain
| Dv, mm | Dn, mm | Dd, mm | А, mm | В, mm | Weight, kg |
| 350 | 420 | 520 | 100 | 130 | 2,37 |
| 400 | 460 | 560 | 100 | 130 | 2,65 |
| 450 | 520 | 620 | 100 | 130 | 3,14 |
| 500 | 560 | 660 | 100 | 130 | 3,44 |
| 550 | 620 | 720 | 100 | 130 | 3,95 |
| 600 | 660 | 760 | 100 | 130 | 4,29 |
It is used to prevent basalt fibre from rain
| Dv, mm | Dn, mm | Dd, mm | А, mm | В, mm | Weight, kg |
| 350 | 420 | 520 | 100 | 130 | 2,37 |
| 400 | 460 | 560 | 100 | 130 | 2,65 |
| 450 | 520 | 620 | 100 | 130 | 3,14 |
| 500 | 560 | 660 | 100 | 130 | 3,44 |
| 550 | 620 | 720 | 100 | 130 | 3,95 |
| 600 | 660 | 760 | 100 | 130 | 4,29 |