Pleatco PDC30-AFS Cartridge/Grid Replacement for Dual Core Advanced Filtration System for Ppm50Sc-F2M Pleatco Cartridge Filter replacement Cartridge/Grid Dual Core Advanced Filtration System for PPM50SC-F2M Mfg.No.:PPM50SC-F2M, PPM35SC-F2M, PCAL42-F2M