The new acoustic wall louvre type 447 is the perfect solution for applications where aesthetics, high airflow and good sound reduction are required. This louvre has a better physical free area than type 446 and also offers you a high level of sound reduction thanks to the integrated inorganic mineral wool.
The acoustic blades are made of aluminium and have a blade pitch of 170mm. These blades are available in depths of 150 and 225mm respectively with blade type L.150 ACS.01 and L.150 ACL.01.
Material
• Aluminum profiles AlMgSi 0.5 (according to EN 12020-2)
• Finish: satin or bronze anodised (20 micron) or powdercoated in any RAL colour (60-80-microns)
• Stainless steel mesh 304 6x6mm
| 447/150 | 447/225 | |
| K factor (supply) | 24,4 | 28,58 |
| K factor (discharge) | 25,15 | 30,88 |
| Ce coefficient | 0,198 | 0,187 |
| Cd coefficient | 0,200 | 0,180 |
| Sound reduction in open position: RW (C;Ctr) | 9(0;-1) dB | 13(-1;-3) dB |
| Visual free area | 59 % | 59 % |
| Physical free area | 37 % | 37 % |
Specification sheet
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