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The Filbur FC-2710 is the replacement filter for the Unicel C-4440 R.
Guaranteed to fit or your money back!
The Unicel C-4440 Comp. Pool & Spa Filter Cartridge is a pool filter cartridge replacement constructed with 40 sq. ft. of pleated Reemay filter media for the reduction of contaminants in swimming pool and spa water. This compatible Unicel spa filter, also known as the Filbur FC-2710, measures 4 5/8" x 16 3/4" with a Closed Castle top style and 2 1/8" Open bottom style.