TELERGO extraction arms have been constructed for effective extraction the welding dust and gas contamination, as well as other small dust particles – directly at the emission source. Important is not to allow the contamination to expand in the process room, preventing it from being inhaled by people. The extraction arms can be applied in any areas where the workspace is limited. Commonly, this is the case in welding schools, where the welding boots are very small. The arm can work as a single appliance, with its own extraction fan, or in a group of local exhausts connected to the main collecting ductwork (with a central fan).