The cabinet type exhaust hood is commonly known as a fume hood, similar to a closed hood. The small parts spray booth and the chemical laboratory fume hood are typical structures of the cabinet exhaust hood. Large-scale chamber fume hood, one side is completely open, the operator works in the cabinet, mainly used for large-painting, powder bagging, etc. The working port of the fume hood has a great influence on the air distribution in the cabinet, and the air distribution directly affects the working effect of the cabinet exhaust hood. https://www.ydp-hospitalfurnitur...aboratory-fume-hood.html