The Karcher Cartridge Filter is a paper flat pleated filter rated to dust class M, designed as a genuine replacement for a range of Karcher NT wet and dry vacuum cleaners. Compatible with the NT 35/1, NT 45/1, and NT 55/1 Eco, Eco Te, and Eco M models, as well as the NT 361, NT 561, and NT 611 Eco, Te, and M variants, this filter ensures your vacuum continues to perform at its intended Specifications: Dust class M filtration is suited to environments where medium-hazard dusts are present, making this filter relevant to contractors, carpenters, and site operatives working with wood dust and similar materials. Replacing the filter at the correct intervals helps maintain suction performance and ensures the vacuum operates within its designed filtration parameters. Features and Benefits: • Dust class M rated filtration for medium-hazard dust capture • Paper flat pleated design provides effective filtration surface area • Compatible with a wide range of Karcher NT wet and dry vacuum models • Genuine replacement filter to maintain vacuum performance to original specification