Photo 1 of 2 Pack 4CH-949 Spa Pool Filter Cartridge Replacement for Pleatco PWW50L, Filbur FC-0172, Waterway Teleweir 50, Rising Dragon 50,FIL50-5D13H15FCT-3, Hot Tub Filter | Compatible with SD-01143, 817-4050

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Photo 1 of 2 Pack 4CH-949 Spa Pool Filter Cartridge Replacement for Pleatco PWW50L, Filbur FC-0172, Waterway Teleweir 50, Rising Dragon 50,FIL50-5D13H15FCT-3, Hot Tub Filter | Compatible with SD-01143, 817-4050