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VENTAFLEX – more efficiency in air conduction


VENTAFLEX GmbH & Co. KG is the developer and producer of efficient, pre-insulated air duct systems, which are produced on the basis of PUR foam. For more than 35 years VENTAFLEX products have been installed in – and under – great building complexes and industrial plants. According to the modular system standard components are supplemented with special custom-made components, if necessary. This way a perfect air duct-solution is developed for every construction project.

Cost-optimized solutions above- and underground

Different application areas have different technical demands to a reliable working air duct system. This is why we have developed two different products, which do their job perfectly on the spot.

VENTAFLEX Air ducts for room-facade-roof


Our classic: VENTAFLEX air ducts room-facade-roof

This air duct system is designed for the use in rooms, on the roof or for the installation to facades. The PUR-material is coated with an additional UV-resistant GRP-layer for the aboveground ducts.

LAVANTUS air duct for underground installation


Our innovation: LAVANTUS air ducts for underground installation

An air duct system, which was especially developed for the underground installation with high stability. PUR is processed to a closed-pore air duct in a patented Rotafusion Method.


Completely manufactured at VENTAFLEX

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VENTAFLEX Calalog 2023

All air duct products, technical details, supplies and installation instructions can be found in our general catalog.

• Installation of VENTAFLEX air ducts with VENTASNAP and VENTAFIX
• Glueing of VENTAFLEX air ducts
• Installation of a compensator for the expansion compensation

• Laying the air ducts
• Length adjustment of air ducts
• Installation LAVANTUS ring seal
• Installation LavantusGrip