SP-CBC-10 10x2.5 PAC NSF Carbon Block Water Filter - $5.06
FDA Certified Coconut Shell Based Carbon Block Filter Cartridge 0.5 Micron / 1 Micron 10 Inch with 2.5 Inch/4.5 Inch Outer Diameter - China Water Filter Carbon Block and Carbon Water Filters
1 Micron Carbon Block Cartridge
Amazon.com: 1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Countertop Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack: Tools & Home Improvement