Acts as a damper along the flue gases
Is produced:- in basic design without opening;
- in design 1 with aperture 50 mm diameter;
- in design 2 with aperture 15 mm diameter.
| D, mm | В, mm | А, mm | Weight, kg |
| 350 | 630 | 390 | 7,09 |
| 400 | 690 | 440 | 8,55 |
| 450 | 780 | 490 | 10,56 |
| 500 | 840 | 540 | 12,31 |
| 550 | 930 | 590 | 14,69 |
| 600 | 990 | 640 | 16,72 |