The Unicel C-4602 R is a compatible replacement for the following pool and spa filter cartridges:
The Unicel C-4602 Comp. Replacement Pool Filter increases water clarity and quality in swimming pools and spas. This pool filter cartridge features sharp pleat folds and 6 sq. ft. of media that traps contaminants effectively. This compatible Unicel pool filter, also known as the Filbur FC-3811, measures 4 5/8" x 8" with 2 3/8" Open top and bottom styles.