The Doulton W9222901 SuperCarb OBE Ceramic Filter fits 10" filter housings and utilizes a ceramic shell with a carbon block core to provide sub micron filtration of drinking water. The Doulton W9222901 iis open on both ends (OBE), has the pore structure to remove fine particulates, bacteria, cysts, and turbidity. In addition, the ceramic shell is sliver impregnated to inhibit bacteria growth, making the filter self sterilizing. The SuperCarb OBE Ceramic Filter has a micron rating of 0.9, a flow rate of 1 gpm, and a 1000 gallon capacity. Use the Doulton W9222901 SuperCarb OBE Ceramic Filter to remove turbidity, E.Coli, Cholera, Typhoid, Cryptosporidium, insecticides, herbicides, phenols, and chlorine.