Granulated Activated Carbon Filter – 5 Micron 10″ x 4.5″ Media: 100% PURE coconut carbon. High quality filter with top range GAC sourced directly from Haycarb Holdings. They offer Carbon of the highest grade, which is why they are the supplier to globally renowned companies such as Coca-Cola. We do not use nor offer cheap carbons, however, you can be assured that the carbon we sell is 100% PURE coconut carbon, not a coconut/coal blend. Coal/Coconut Carbon should not be used in drinking water.