Doulton Model: HIP IP100SC Filter lasts - 600 gallons Cost of replacement filter - $59.00 Cost per gallon - 9.8 cents The Doulton In-line water filter model HIP fitted with the UltraCarb Ceramic water filter provides the highest levels of bacteriological and particulate protection for household drinking water, water coolers and fountains and ice making machines. The water filter is supplied complete with mounting bracket and integral push fit connections for ease of installation. A household installation kit is also included and supplied complete with tubing, faucet and all fittings. HIP carries independent quality approval to the highest level and is supplied with both NSF International Standards 42and 53 as well as UK WRc Water Bylaws Scheme listing. Beware of Cheap imitation housings not branded Doulton Uses 1 Doulton 10 inch Ultracarb