Pentair Pentek CFB-Plus20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Fibredyne Modified Molded Carbon Block Replacement Cartridge, 20" x 4.5", 5-10 Micron

The Pentek Fibredyne CFB-Plus 20-Inch Big Blue Carbon Block Water Filter utilizes patented Fibredyne technology to mold the carbon block, attaching powdered activated carbon onto a cellulose-free fiber matrix. This revolutionary technology combines the benefits of both a sediment filter and a carbon filter into one outstanding filtration product, offering up to twice the dirt-holding capacity and unpleasant taste & odor reduction. Will not release tiny black specks of carbon fines into your filtered water due to a specially formulated post-filtration layer.