ISO 5135:2020 establishes general rules for the acoustic testing of air-terminal devices, air-terminal units, dampers and valves used in air diffusion and air distribution systems in order to determine sound power levels as defined in ISO 3741.
![ISO 5135:2020](https://www.365standards.com/wp-content/uploads/2023/03/ISO-5135-2020.png)
Online Standards download
ISO 5135:2020 establishes general rules for the acoustic testing of air-terminal devices, air-terminal units, dampers and valves used in air diffusion and air distribution systems in order to determine sound power levels as defined in ISO 3741.