Any fume extraction arm would be in the range of 1000 – 1200 m3/h flow. Some arms go lower. These systems will ideally have higher flow and lower static pressure compared to solutions you would pair with fume extraction torches. Remember with fume extraction system flow is the key performance metric. Portable fume extraction systems are measured on static pressure moreso than flow. For a portable fume extraction system, the typical range is anywhere from 60 – 100 CFM (102 - 170 m3/h. An important item to consider is that the flow mentioned in most product catalogs assumes zero restriction, which is not a solution based in the real world. There is no good and simple answer for what your flow is going to be once you connect a fume extraction torch to the system. These results typically sit on a flow curve. Since the torch is typically a very restrictive tool, keep in mind you will need a unit able to produce a high static pressure to overcome a torch’s restrictions.