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The Filbur FC-1979 is the replacement filter for the Pentair 175689 R.
Guaranteed to fit or your money back!
The Pentair 175689 Comp. Replacement Pool Filter has a diameter of 7 inches, and a length of 20 1/4 inches. This spa filter cartridge has both an open top and bottom, and each has a diameter of 3 inches. This pool filter replacement will keep the water in your pool or spa clean and clear.