With the original storage filter for the ProfiMaster, you get the highest welding fume separation with the lowest energy consumption. The filter cassette has a filter area of 17 m² and the filter class is E12 with a separation rate ≥ 99.5 %. Important note: When using original filters, you are on the safer side and act in a legally compliant manner, as this means that the IFA W3 certification and the warranty of your unit remain intact and valid.