SORDO-A, Size 125-500
SORDO-A
Sound attenuators for circular ducts
- 50 mm mineral wool
- Galvanised sheet steel to Environmental Class C3
- 100 mm shorter
- Air tightness class D
- M1 classified
- Excellent noise attenuation
- Low pressure drop
- Included in the MagiCAD database
- Fire-resistance class EI30 to EI120*
*See the table for requisite safety distance
| Dimension | Length | Static integral attenuation, dB to ISO 7235 | |||||||
| (mm) | (mm) | 63 | 125 | 250 | 500 | 1K | 2K | 4K | 8K |
| 100 | 500 | 5 | 7 | 12 | 24 | 37 | 45 | 35 | 24 |
| 100 | 800 | 6 | 10 | 19 | 32 | 45 | 50 | 45 | 27 |
| 100 | 1100 | 7 | 12 | 26 | 40 | 50 | 50 | 50 | 38 |
| 125 | 500 | 3 | 6 | 10 | 21 | 30 | 37 | 32 | 17 |
| 125 | 800 | 4 | 9 | 16 | 30 | 40 | 50 | 38 | 25 |
| 125 | 1100 | 5 | 12 | 21 | 39 | 50 | 50 | 44 | 33 |
| 160 | 500 | 3 | 5 | 10 | 17 | 25 | 32 | 17 | 14 |
| 160 | 800 | 4 | 8 | 15 | 25 | 35 | 42 | 28 | 20 |
| 160 | 1100 | 5 | 11 | 20 | 33 | 46 | 50 | 39 | 25 |
| 200 | 500 | 3 | 3 | 8 | 13 | 18 | 22 | 13 | 12 |
| 200 | 800 | 3 | 5 | 11 | 20 | 30 | 35 | 20 | 17 |
| 200 | 1100 | 4 | 7 | 15 | 27 | 42 | 48 | 27 | 19 |
| 250 | 500 | 2 | 2 | 5 | 10 | 16 | 15 | 8 | 6 |
| 250 | 800 | 2 | 4 | 8 | 15 | 23 | 24 | 12 | 9 |
| 250 | 1100 | 3 | 6 | 11 | 20 | 31 | 34 | 17 | 11 |
| 315 | 500 | 1 | 3 | 4 | 7 | 10 | 7 | 6 | 2 |
| 315 | 800 | 1 | 4 | 7 | 12 | 17 | 14 | 8 | 4 |
| 315 | 1100 | 2 | 5 | 9 | 17 | 25 | 21 | 10 | 6 |
| 400 | 500 | 1 | 3 | 3 | 7 | 10 | 7 | 5 | 3 |
| 400 | 800 | 1 | 3 | 5 | 11 | 15 | 10 | 6 | 3 |
| 400 | 1100 | 2 | 4 | 7 | 15 | 20 | 13 | 7 | 3 |