Abstract: A plate filter composed of horizontal filter plates arranged in a vertical stack and each defining a fluid-tight partition and being provided with fluid flow channels at both its upper and lower faces, a plurality of frame members each disposed between a respective adjacent pair of filter plates, a pressing unit arranged to press the filter plates and frame members toward one another in a direction to close the filter, cloth guided by rollers to traverse a path extending past each face of each filter plate in the region between each such face and the frame member adjacent thereto, and a suspension arrangement composed of a chain of links supporting the filter plates and the frame members when the filter is open.