BS 4954-2:1978

Methods for testing and rating induction units for air distribution systems. Acoustic testing and rating|Induction units, Air control devices, Air-conditioning systems, Air-distribution systems, Acoustic testing, Acoustic measurement, Ratings, Noise (environmental), Sound intensity, Audiofrequencies, Sound sources, Graphical methods, Extrapolation Click the banner to get it at ONLY: GBP116.00