Extended – much more advanced version of the settling chamber. The system works just like the settling chamber: by the use of centrifugal force. The device consists of a set (of batteries) of small chambers where flowing gases reach high peripheral speeds. Because the dimensions of individual “cyclones” are small, the system creates several or more dozen “cyclones”. This design allows for much higher efficiency (up to 70%) and much wider range of PM10 and PM 2.5. Such a design makes only clean (dusted) exhausts are sucked through the chimney and the dust descends into the dust chamber. The studies show a decrease in dust content from about 450mg / m3 to about 150mg / m3.