Skip to main content

Supplies for underground installed air duct


The characteristics of the material, the customized supplies and the short-term consultation stand for a significant advantage for the realisation of big construction projects.

Ring seal for a clean wall duct

The ring seal is a clean solution for the duct of LAVANTUS air ducts to go through brickwork, walls and concrete slabs. One advantage – next to the ideal connection and sealing of the air ducts – is the simple installation.

LavantusGrip cuff: always a good connection!

The best way to have a "long duct", is the reliable connection of single duct segments with LavantusGrip. In short time a reliable underground installed system is installed securely with 4 stainless steel tightening straps and is extremy tight due to the wide EPDM rubber inlay.

What does not exist, is made fit: customized special components

If a special component for your project is not available from the LAVANTUS standard product range, we produce the missing object custom made in our production. Special angles of outlets, curves or other components of the ventilation system like e.g. outlets that have to be precisely fit to the requirements: we mutually develope the perfect solution with you. 


Download product sheet as PDF


VENTAFLEX catalog 2022

VENTAFLEX catalog 2022

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

Download pdf (17 MB)
Installation VENTAFLEX air duct round

Installation VENTAFLEX air duct round

  • Installation of VENTAFLEX air ducts with VENTASNAP and VENTAFIX
  • Glueing of VENTAFLEX air ducts
  • Installation of a compensator for the expansion compensation
Download pdf (742 KB)
Installation LAVANTUS air duct for underground

Installation LAVANTUS air duct for underground

  • Laying the air ducts
  • Length adjustment of air ducts

  • Installation LAVANTUS ring seal

  • Installation LavantusGrip

Download pdf (4 MB)


The change in energy policies demands a different technology

Read more

Underground installed air ducts for comfortably temperated air in the event hall of the listed Liebfrauen church

Read more

LAVANTUS – the air duct especially for underground installation

Read more

With immediate effect LAVANTUS is only used for underground and VENTAFLEX classic only for aboveground installation!

Read more