NBS Source

Sound attenuators

Uniclass 2015 category Pr_65_67_78

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Acoustic duct linings (3)

Pr_65_67_78_02

Acoustic duct linings

Circular attenuators (1)

Pr_65_67_78_12

Circular attenuators

Rectangular attenuators (2)

Pr_65_67_78_72

Rectangular attenuators