This refrigerator water filter contains a compressed carbon block which provides tremendous capacity to remove and/or reduce impurities and sediment that may be present in your drinking water. The carbon block has millions of active sites on its surface and within the structure which can absorb impurities like a sponge     and can adsorb and hold other types of impurities on its surface like a magnet. Additionally     this filter can catalytically breakdown other impurities very similar to the way a catalytic converter works in your automobile. These processes ensure that you are getting the cleanest and best tasting water possible. Samsung Filters: DA29-00020A     DA29-00020B    4609101000    9101     46-9101    469101    9101     DA-97-08006A     DA-97-08006A-B     DA-97-08006B     DA29-00019A     DA2900019A     DA2900020A     DA2900020B     DA97-08006A-B     HAF-CIN     HAF-CIN-EXP     HAF-CINEXP     HAFCIN     HAF-CINS.