Optimum Pool Technologies Filter Replacement for Pentair Clean & Clear 200; 200 SQ.FT. Cartridge Element Made with 100% Reemay, a spunbond polyester filtration media that was made specifically for durability and antimicrobial protection. Replaces Pentair CC200 Cartridge Element Outside Diameter: 10-1/16, Length: 31-1/8 OEM# R173217, Unicel# C-9419, C9419 Includes support bands around each cartridge element.