LAVANTUS underground installed air duct
Air duct for the underground installation. The LAVANTUS air duct is produced of one single material made of PUR rigid foam in a specially developed Rotafusion unit. Lengthy development work and over 35 years experience pay off in many ways: VENTAFLEX has been able to bring a revolutionary new product onto the market, which - needs-oriented to the underground installation – is also financially attractive in the acquisition.
Your advantages:
- solid
- reliably tight
- pre-insulated
- no condensate formation
- no adhesion due to smooth surfaces
- low weight
- fast installation with LavantusGrip
- big standard product range
- customized special components
Nominal diameter:
200, 250, 300, 355, 400, 500, 600, 710, 800, 900, 1.000, 1,250
You find sizes, dimensions and all details of all our products in our downloads and in our complete catalog.
Please contact us. We will be happy to advise you.
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Underground installed LAVANTUS air ducts are an integral part of the new ventilation concepts
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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