Asymmetrical manual manifold FI 350 mm 45° with edge under the band.The FI 350 mm adjustable manual manifold for extraction is a device for evenly distributing the flow of air or other gaseous substances in an extraction system. It is used in various industries such as industry, laboratories and ventilation systems.The main function of the adjustable manifold for extraction is to control the amount of flowing air or gaseous substances in different branches of the extraction system. This makes it possible to adjust the amount of extracted air at different locations, which is especially useful when different extraction levels are required or in areas with different pollutant loads.Adjustable manifolds for extraction are usually equipped with adjustment flip-flops to control air flow. These flip-flops can be manually adjusted, depending on the type of extraction system and user preference.