Pregybel R15 n8 becomes Creason Round R15 n8 Creason R15 n8 boards are block perforated tiles, with the back side covered with a special noise insulation coating. This board features 15mm diameter round perforations evenly arranged on a modular pattern across 8 symmetric fields on the surface. The acoustic membrane is white. The perforated boards in the Creason range feature the CAPT'AIR technology to improve indoor air quality, which absorbs formaldehydes from the air and transforms them into neutral, inert compounds, preventing their re-emission into the air.