There were problems installing the filter, not because of the quality of the part but because of the design. 1) You have to loosen a set of four screws, 2) the screws don't really hold the filter in place - pulling it seems to loosen it easily, 3) screwing the filter back into its housing wasn't easy - one side went further in and the other didn't, and the cylindrical foam filter on the outside kept wedging at the seam at the top of the cartridge.