Reduces CTO (Chlorine Taste and Odor), harmful contaminants, sediments and particulates;Manufactured in South Korea from NSF certified facility and our facility is regularly audited via NSF and other few professional institutions;EASY push in and out connector. Patented in and out connector enables very easy installation even without much knowledge in plubming;Using compressed block - NOT GAC (Granulated Carbon) or extruded block;Independently tested to filter up to 98% after use of 343 gallons of water and this represents almost 4-5 months of water use in average household.