Aerosols are fine particles (solid or liquids) in suspension in the air, such as dust, soot, fumes, water particles, oil-mist, etc.
These particles often condensate when pressure and/or temperature changes occur, and deposits occur within the ventilation airducts. This is a current phenomenon in kitchen ventilation and the process industry where air filled with oil and coolants mist has to be extracted.
Air-ducts for such applications must consequently outperform the class D according to the DIN EN 12237 and comply with the ATC1 class according to the DIN EN 16798-3.
The following METU products have been designed for such applications and do not require any additional measures to achieve the required tightness: