Made to be used as a pre-filter for Doultons HIP2 Duo and HIP3 Triple housing systems, this filter is capable of filtering sediment as small as 10 microns. Note: The W9240002 fits only Doulton pressurized filter systems that use short mount filter candles. The Doulton Specialty Replacement Filter Cartridge fits all Doulton short mount Countertop, Undersink and Inline Systems. The filter uses Pleated Fabric to remove contaminants for up to 6 months or gallons - whichever comes first. Contaminant Removal:. Sediment. Dirt. Rust. Specs:. Filter Type: Pleated Fabric. Filter Life: 6 months. Micron Rating: 10 microns. Country of Origin: United Kingdom (GB).