The case of the noise absorber and the frame of the plates are made of galvanized steel.
The plates are filled with non-combustible sound-absorbing material with a coating that prevents particles of material from entering the air duct.
To achieve maximum noise absorption efficiency, it is recommended to provide a straight section of at least 1 m before of the noise absorber.
The maximum air speed between the plates should not exceed 20 m/s.
To reduce noise more effectively, it is recommended to install two absorbers in a row, one after the other.