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The Filbur FC-0359 is the replacement filter for the Waterway 817-0050 R.
Guaranteed to fit or your money back!
The Waterway 817-0050 Comp Pool & Spa Filter Cartridge has a diameter of 6 inches, and a length of 8 1/4 inches. This spa filter cartridge has an closed crescent handle top, and an open bottom which has a diameter of 1 1/2 inches and Society of Automotive Engineers (SAE) threads. This pool filter replacement will keep the water in your pool or spa clean and clear.