Neo_Pure 4-Pack of "Generic" Mini-Classic Eco-Friendly Carbon Filters Contains Coconut Shell GAC (Granulated Activated Carbon) - Reduces Chlorine Taste and Odor Polishes the taste of water that has passed through the distiller For use in Mini Classic II and Mini Classic CT Distillers Package of 4 Filters is about one years supply, 180 Gallons or 90 Days