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Armstrong SCALA features a microperforated surface pattern offering both contemporary design and good acoustical performance • Good light reflectance (85%) Thickness (mm) -12MM Exposed demountable - System C Sound absorption -EN ISO 354 αw = 0.50 as per EN ISO 11654 - Class D Frequency f (Hz) 125 250 500 1000 2000 4000 αP 0.35 0.35 0.55 0.75 0.65 0.60 NRC = 0.50 as per ASTM C 423 Sound attenuation -EN ISO 10848-2 Dn,f,w = 31 dB as per EN ISO 717-1 CAC = 31 dB as per ASTM E 413-10 Thermal conductivity-λ = 0.060 W/mk as per EN 12667 Humidity resistance-70% RH
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