The Unicel C-4970 R is a compatible replacement for the following pool and spa water filter cartridges:
The Unicel C-4970 Comp. Replacement Pool & Spa Filter is a pool filter cartridge replacement constructed with 75 sq. ft. of pleated Reemay filter media for the reduction of contaminants in swimming pool and spa water. This compatible Unicel pool filter, also known as the Filbur FC-2930, measures 4 15/16" x 23 5/8" with a 2 1/8" Open top and bottom styles.