Water filter for a high-pressure cleaning appliance (10) with a filter cage (30), which a first end disk (32) with an inlet opening (50) and a closed second end disk (34) as well as the two end plates (32, 34) of the conveyor of the longitudinal struts (38), and with a filter material (40) which is arranged between the two end plates (32, 34), wherein the inlet opening (50) from the water to be filtered with respect to the longitudinal axis (36) of the filter cage (30) in the axial direction and the filter material (40) is adapted to flow in the radial direction, characterised in that, at the second end disk (34) a flow cross section boundary element (54) is arranged, which, in the interior space (52) of the filter cage (30) and the interior space (52) for at least a quarter fills.
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