Components within classification

Cleanliness Classification of Air-handling Components is based on general and component-group-specific requirements. The general requirements for a classified component are:

  • a classified component shall not increase the concentration of contaminants that are detrimental to health or comfort in the air handling system or supply air
  • a classified component shall not produce odours, or gaseous or particulate contaminants that decrease the quality of supply air
  • a classified component shall be easy to clean

At the moment following product groups are within the classification:

  • ducts and fittings
  • air and fire dampers
  • terminal devices
  • silencers
  • air filters 

M1 labeled air-handling component shall fulfill both general and product-group-specific requirements.

Please see the product-group-specific requirements in pdf-form on our Materials-page.