Аcts as a damper along the flue gases
It is produced:
- in basic design with a handle;
- in design 1 with rotating rod;
| D, mm | Des. basic, Des.-01 | Des. basic | Des.-01 |
| H, mm | Weight, kg | ||
| 350 | 500 | 3,16 | 3,32 |
| 400 | 500 | 4,29 | 4,45 |
| 450 | 500 | 4,9 | 5,07 |
| 500 | 600 | 6,31 | 6,48 |
| 550 | 600 | 7,05 | 7,22 |
| 600 | 800 | 12,09 | 12,26 |
| 650 | 800 | 13,24 | 13,41 |
| 700 | 800 | 17,26 | 17,44 |
| 750 | 900 | 18,66 | 18,84 |
| 800 | 900 | 20,1 | 20,27 |
| 900 | 1000 | 23,02 | 23,2 |
| 1000 | 1000 | 26,06 | 26,24 |