3 Replacement Filter Package for the Chanson Whole-House Triple Filter WH3

3 Replacement Filter Package for the Chanson Whole-HouseTriple Filter WH3 Replacement filter package for the Whole-House Triple FilterWH3 . THIS PACKAGE CONTAINS THE FILTERS ONLY – NO HOUSINGS ARE INCLUDED. Chanson WH3 filters need to be changed every 12 months in order to give you the highest level of reduction capabilities. Your WH3 standard filter configuration includes the following three 20" cartridges: Stage 1: KDF-55/GAC Stage 2: Bone Char Carbon Stage 3: Catalytic GAC