Telescopic exhaust arms are designed especially for welding schools, where small welding tables are in use. In these places it is difficult to use the standard exhaust arm, which would disturb the trainee with its wide swivel range. The telescopic arms allow a smooth vertical movement and can also be swiveled to the left and right. The exhaust hoods are fitted with universal joint and allow also to be directed into any position. These features make these arms the ideal solution for all applications with restricted space.