As most probably already noticed, the cartridge is much too small for the suckers (formerly the cartridges were bigger). She sits down due to the tiny wrinkles quickly and to top it is the plastic that holds the paper, so bad that the cartridge for a few, even cautious, try to knock out already has cracks or fractures. Another filter, I have unfortunately not yet been found. I believe in something one can speak of rip-off, because that part does not cost 5, - what would be appropriate, however. Too bad - I have always been convinced of Kärcher, but would look around for a reason explained above other manufacturers for the next sucker.