Due to its differential pressure-controlled, automatic filter cleaning system, the stationary cartridge filter for welding fume extraction is suitable for high levels of smoke and dust and non-stop operation with low operating costs. The KemTex® ePTFE membrane filter cartridges for ultra-fine dust particles separate particles even below 0.1 µm. The two-exhaust arm version with integral dampers allows simultaneous or alternating work in two places with adjustable extraction performance.