www.owa.de premium OWAcoustic® Technical Data Surface pattern Cosmos plus Cosmos plus 76 Example OWAconstruct® System S 3, Chrome Exposed grid Material Mineral wool building tiles Building material class A2-s1,d0 to EN 13501-1 Thickness 15 mm nom. Colour white Light reflection approx. 84 (ISO 7724-2, ISO 7724-3) Sound reduction* from 29 dB to 49 dB Sound absorption áw = 0.80 / NRC = 0.75 Moisture resistance up to 95 % RH Fire protection* up to F 120 (DIN 4102) up to REI 120 (EN 13501-2) * Dependent on system, soffit and other factors