Acoustics: Acoustic NRC Rating: NRC 0.55 (12mm systems) Class D, NRC 0.75 (25mm systems) Class C
Calculated to EN ISO 11654:1997
Environment & Sustainability: Harmony is made from at least 45% previously recycled polyester fibre (from PET bottleflake), and is 1oo% recycled.
Fire Safety: 12mm – EN13501+A1:2009: B-sq, d0
24mm – EN13501-1:2007+A1:2009: B-s1, d0