Pentek UDS-10EX1 10 - Inch KDF/Coconut Shell (GAC) Cartridge Bacteriostatic KDF-55 combined with coconut shell carbon media Fits most 10 inch housings Reduces chlorine, taste, odor and sediment, heavy metals and VOCs Inhibits bacteria ; Long-life ; 5 Micron Replaces RV-10KDF-A