(4) Commercial Acoustics sound attenuators are engineered to achieve a maximum insertion loss with a minimum pressure drop. Commercial Acoustics sound attenuators feature airfoil design for efficient aerodynamic performance, as well as superior acousti cal materials and totally galvanized steel construction, guaran teeing excellent reliability and performance.
(24) Commercial Acoustics sound attenuators are designed and engineered to eliminate acoustical fill entrainment by the airstream and reduce to a minimum the absorption of gases and particles by the acoustical fill. Reliability and performance are guaranteed since the basic configuration and materials are utilized.
