Weighted Sound Absorption Coefficient (αw) – Value - Upholstery - ISO 11654 (Annex A & B)
0.7
Weighted Sound Absorption Coefficient (αw) – Class – Upholstery - ISO 11654 (Annex A & B)
C
Sound Absorption Average (α) – Upholstery - ASTM C423
0.7
Noise Reduction Coefficient (NRC) - Upholstery - ASTM C423
0.7