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Ventilation ducts


We manufacture two types of ventilation ducts: rectangular and circular.
They are made of the following metal sheet types:

  • galvanised;
  • acid-proof;
  • black (metal sheet coated by spraying and powder-coated, hot-dip galvanised);
  • aluminium. 


 Rectangular ducts are available in the following versions:

  • without insulation (standard),
  • insulated on the outside (with mineral wool and galvanised steel casing);
  • insulated on the inside (with mineral wool).



Circular ducts are available as:

  • spiral pipes;
  • welded pipes and profiles;
  • connecting profiles and components.


KMW Engineering also offers components constructed in the stay-in-place formwork technology.


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