The Doulton W9220406 Imperial Sterasyl OBE Ceramic Filter is a self-sterilizing, powerful and effective filter that offers superior quality drinking water. It has a dimension of 11.4? x 3.7? x 3.6?. Open on both ends, it fits standard 10" filter housings. It has a micron rating of 0.9, a flow rate of 1.33 gpm and 2600 gallon capacity. Owing to its ceramic shell, which is impregnated with silver, bacteria growth is inhibited and this filter can be easily cleaned and used several times. Imperial Sterasyl OBE Ceramic Filter removes particulates, turbidity, E.Coli, Cholera, Typhoid, Cryptosporidium, and cysts.