Sonoflex is made of perforated Alutex inner duct as a basic duct, thermal insulation of glass wool 25mm thick and external jacket made of polyester laminated aluminium foil. Due to its exceptional flexibility it is easy to in stall on circular and oval connectors.
Pressure loss graph
Sound attenuation for 1, 2 and 3m duct
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| 100 | 1 | 11 | 15 | 21 | 25 | 34 | 29 | 31 | 22 | | 125 | 9 | 13 | 21 | 24 | 26 | 26 | 31 | 21 | | 160 | 5 | 8 | 12 | 29 | 28 | 27 | 31 | 18 | | 200 | 2 | 6 | 13 | 23 | 22 | 27 | 23 | 17 | | 250 | 4 | 10 | 17 | 19 | 19 | 21 | 14 | 14 | | 315 | 3 | 16 | 18 | 17 | 19 | 16 | 10 | 8 | | 406 | 2 | 9 | 17 | 15 | 20 | 10 | 5 | 3 | |
| 100 | 2 | 13 | 17 | 22 | 25 | 43 | 48 | 31 | 22 | | 125 | 13 | 13 | 21 | 26 | 34 | 37 | 32 | 24 | | 160 | 14 | 15 | 17 | 27 | 35 | 44 | 36 | 26 | | 200 | 8 | 11 | 21 | 26 | 39 | 29 | 34 | 20 | | 250 | 3 | 7 | 17 | 24 | 27 | 27 | 23 | 19 | | 315 | 5 | 13 | 21 | 20 | 22 | 24 | 16 | 11 | | 406 | 7 | 14 | 16 | 16 | 22 | 16 | 8 | 6 | |
| 100 | 3 | 16 | 17 | 28 | 39 | 43 | 48 | 32 | 22 | | 125 | 14 | 18 | 27 | 38 | 41 | 44 | 33 | 25 | | 160 | 17 | 17 | 25 | 37 | 39 | 37 | 37 | 27 | | 200 | 22 | 21 | 23 | 35 | 38 | 36 | 39 | 28 | | 250 | 5 | 10 | 20 | 30 | 32 | 28 | 32 | 24 | | 315 | 9 | 18 | 21 | 25 | 30 | 28 | 23 | 16 | | 406 | 8 | 18 | 17 | 18 | 22 | 20 | 13 | 8 |
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