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The Filbur FC-1977 is the replacement filter for the Aladdin 20503 R. Guaranteed to fit or your money back!
The Aladdin 20503 - 105 Sq. Ft. Compatible Pool Filter is a replacement swimming pool water filter cartridge that improves the quality and clarity of your water by reducing impurities. This compatible Aladdin 20503 filter measures 26 inches in length and has a 7 inch diameter. In addition, this pool filter features 3 inch top and bottom openings.