DVAC Sound Attenuators are designed to reduce noise transmission within HVAC duct systems while maintaining optimal airflow performance.

The units have been tested and certified in accordance with ASTM E477‑06a, with Dynamic Insertion Loss and Self‑Noise Acoustic Performance Data obtained at the AMCA (USA) test facility using a duct‑to‑room reverberant test setup with airflow through the attenuators.

Standard DVAC Sound Attenuator Types (Rectangular & Circular):

• • – RSA
  • – CASA
  • – CBSA

DVAC Sound Attenuators are licensed to bear the AMCA Seal for sound and air performance ratings, confirming compliance with recognized industry standards.