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The Filbur FC-2394 is the replacement filter for the Unicel C-4311 R.
Guaranteed to fit or your money back!
The Unicel C-4311 Comp. Pool Water Filter Replacement is constructed with pleated Reemay filter media and reinforced antimicrobial end caps. This pool filter cartridge improves water clarity and quality through 45 square feet of premium media. This compatible Unicel spa filter, also known as the Filbur FC-2394, measures 4 15/16" x 12 1/4" with 2 1/8" Open top and bottom styles.