Product Description: 1.Full-closed cyclone fume extraction system is designed to avoid fume rising, harm to human and oil fume spread and it will keep kitchen clean. 2.The advanced cyclone annular side-draft is designed with utilization of micro-air dynamics principle and the air-extraction ring surrounding is assembled with different air passages in different specifications. It features even air extraction and fire-resistance which other products of its kind can not comparable. The user would really experience the life in an open-type kitchen without oil fume because the oil fume will be absorbed when it rises along the stove edge. 3.The creative mute air passage is designed with small power, high efficiency and little noise to completely get rid of the noise source above users head.