Optimum Pool Technologies Filter Replacement for Pentair Clean & Clear 150; 150 SQ.FT. Cartridge Element Made with 100% Reemay, a spunbond polyester filtration media that was made specifically for durability and antimicrobial protection. Replaces Pentair CC150 Cartridge Outside Diameter: 10-1/16, Length: 31-1/8 OEM# R173216, Unicel# C-9415, C9415 Includes support bands around each cartridge element.