Kleventa, the leading supplier of high-quality air ducts.

Air Ducts

Discover our extensive range: from the flexible KFL air distribution system to spiral ducts and fittings, rectangular ducts and fittings, spiral fittings with KEN-LOK system and flexible hoses. Our experienced team will be happy to advise you on finding the perfect solution for your project.

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Air Ducts | Our products 

Flexible air distribution system KFL

The KFL air distribution system has been developed for use in virtually all mechanical ventilation systems. Thanks to its flexible ventilation ducts and various fittings, this innovative system offers maximum freedom in design and installation. Ideal for residential construction and small-scale utility projects, but also perfectly suited for renovation and remodelling. The KFL system is easy to install, simple to expand and connects seamlessly to commonly used ventilation materials such as spiral ducts and valve flaps.


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SpiromateriaalWe offer a wide range of spiral ducts and fittings. Spiral ducts are specially designed to ensure optimal airflow while reducing noise. These ducts are often used in HVAC systems and offer excellent performance. Our matching fittings, such as elbows and reducers, ensure seamless installation and an efficient system.​


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leidingwerk en hulpstukkenRectangular tubes and fittings

Rectangular pipes and fittings are used in new residential construction projects. The pipes are cast into the concrete. Standard dimensions are 170x70 and 220x80.


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SpiraloSpiralo accessories KEN-LOK​

KEN-LOK allows you to install your spiral tubes/accessories quickly and easily. A clean and dry surface is no longer important. You no longer need tape. What's more, you can still easily make corrections during installation. The tubes and fittings with KEN-LOK are ideal for visible work and have airtightness class D.


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Flexible hoseFlexible hose

Our range includes various flexible ducts for use in air handling and air conditioning systems. Examples include aluminum duct, sound-absorbing duct, Stretchdec, white PVC, and gray PVC.

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