It is used to prevent basalt fibre from rain
| Dv, mm | Dn, mm | Н, mm | Weight, kg |
| 100 | 160 | 190 | 0,6 |
| 110 | 180 | 190 | 0,7 |
| 115 | 180 | 190 | 0,72 |
| 120 | 180 | 190 | 0,74 |
| 125 | 200 | 240 | 0,93 |
| 130 | 200 | 240 | 0,94 |
| 135 | 200 | 220 | 0,93 |
| 140 | 200 | 220 | 0,94 |
| 150 | 220 | 240 | 1,12 |
| 160 | 220 | 220 | 1,11 |
| 180 | 250 | 240 | 1,39 |
| 200 | 260 | 220 | 1,47 |
| 220 | 280 | 220 | 1,68 |
| 230 | 300 | 240 | 1,91 |
| 250 | 320 | 240 | 2,14 |
| 300 | 360 | 220 | 2,61 |