The pack contains 2 Rowenta vacuum cleaner filter kits, namely 2 pre-filters and 2 post-filters. Replaces item code ZR780000. The filters are compatible with Rowenta vacuum cleaner models RO4811EA, RO4823EA, RO4825EA, RO4826EA, RO4853EA, RO4855EA, RO4859EA, RO4871EA, RO4881EA. Very efficient. Rowenta Compact Power XXL vacuum cleaner filters can filter 99.7% of fine particles in the air, so that clean air from the vacuum cleaner can be eliminated and secondary pollution reduced. The filter cassette has dimensions of 190 mm x 95 mm; The diameter of the round filter is 170mm. Easy to install. Please check the size of your old filter. The front motor filter is washable; the HEPA filter cassette can be chemically cleaned.