... objectionable tastes,Chlorine,unpleasant odor,spore,lead and microorganisms Using granular activated carbon as material, the water filter cartridge is good ... from the filter cartridge, at the same time, it keeps a high flow.There are details as follows:OD(Outer Dia ... ,30 inchesPlease let us know if you need further information. Granular Activated Cobon Filter Cartridge