PEC Group implemented a project in the field of internal structures, in which it does not have special preferences, but the task was rather difficult - in a very short time to protect the large DATA center with high noise characteristics up to 81 dB in translucent structures. A soundproof triplex made of tinted glass was used (special thanks to Paritet for high quality and fast execution). The result exceeded expectations - in the meeting room was determined the level of sound pressure, as a criterion "library"!