Universal KDF/Activated Carbon Water Filter Cartridge - 1 Micron - Replacement 10 inch CTO Water Purifier Filter, (NSF 42 Certified) unknown

Lake Industries Universal KDF 55/Activated Carbon Water Filter Cartridge - 10 Micron - Replacement 10 inch CTO Water Purifier Filter, (NSF 42 Certified) (2-pack)

1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack

Home Master CFF25-10 Jr F2 Replacement Fluoride Filter, Fits Standard 10” Housings, Multi-Stage, Sediment, Activated Alumina, GAC Activated Coconut Shell Carbon Medias, Compression Disks,1 Count