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The cleanest ductwork only with M1 cleanliness class

The cleanest ductwork only with M1 cleanliness class

Our circular Z275 ducts, fittings and dampers (see certificates below) have the classification mark cleanliness M1, which ensures that classified products:

  • will not increase the concentration of contaminants that are detrimental to health or comfort in the air handling system
  • will not produce odours, or gases or particulate contaminants that decrease the quality of supply air
  • will make the process of ductwork cleaning easier,
  • improve Indoor Air Quality (IAQ).

M1 classDownload M1 Cleanliness certificates

These and other products for ventilation and heat recovery can be found in the PRODUCTS section 

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