According the inflamability standard tests SAE J369 and D45 1333-E, the Soundlex line is self extinguishing Class D.


The construction technology of the Soundlex Line®  uses porous and perforated materials for optimized sound attenuation and cost effective AIS solutions. The products of Soundlex Line® 

The measurements were made in laboratory of tests, that was emitted a white noise through the noise emission source and propagated by the tube Sound emission.


The water repellent protects the infiltration of water inside the porous duct.

Hydrophobic properties integrate on the non woven raw material.

soundlex line

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Soundlex® is a line of flexible ducts using by air conduction. The product are self-extinguishable, has strong water resistance, and is available in a range of diameters for your specific requirements.
WdB has developed a comprehensive range of High Performance acoustical attenuating ducting for air intake systems used today by  many of the leading  global automakers and suppliers.

The Soundlex® line has 5 products: 1000F, 1000H, 3000, 4000 and 7000. For all versions there is the possibility to supply the Carbon Duct. Was specially developed with technology of acoustic attenuation and the property to selectively collect pollutants, presenting the purification and thus contributing to environmental preservation. The Soundlex line has all your production procedures in accordance with the standard EPA.

We provide for the automakers

Renault, Dacia, Nissan, Volkswagen, Mercedes Benz, Fiat, Chrysler, Volvo, Ford, Peugeot, Citroen, GM, Cadillac, MAN Latin.


Soundlex® is a completely line that adapts the necessity exactly for each specific project, providing cost reduction and easily assembly.