Active contribution to support fine dust filtration. The electric interior air filter with active particulate charging is a retrofit solution to support fine dust filtration. It can replace a series interior filter which has exactly identical dimensions. In particular, the electrical charge can support fine dust filtration for very small particles in the range of less than 2.5 μm in diameter. These are, for example, brake dust emissions, combustion residues, viruses, bacteria and volatile organic compounds. Items supplied: filter element with control unit wiring set with securing material drilling template service sticker Notes: the change intervals for the electric interior air filter is identical to the change intervals for the regular dust and pollen filter we recommend that the installation is carried out by a specialist workshop