MEASUREMENT OF SOUND DIVERSITY OF ROLLER SHUTTER’S PROFILES
A key problem faced by modern society and in particular workplaces, is the noise pollution phenomenon. Roller shutters profiles that you have been trusting for so many years and that are designed and manufactured entirely by KOLLIAS Ltd. on the basis of this need, demonstrating their unsurpassed potential in acoustic permeability.
The results of the audit carried out by the Scientific, notified and accredited body of the Architectural Technology Laboratory, showed the following indexes:
| Profile type | Weighted sound reduction index | Spectrum adaption terms (C; Ctr) |
| Profile “K8D” | Rw (C; Ctr) | = 29 (-1; -2) dB |
| Profile “FLD12S” | Rw (C; Ctr) | = 36 (-1; -3) dB |
| Profile “K12D” | Rw (C; Ctr) | = 28 (0; -1) dB |
| Profile “K70” | Rw (C; Ctr) | = 30 (-1; -2) dB |
| Profile “K100” | Rw (C; Ctr) | = 28 (-1; -2) dB |