Eliminate impurities from water using this iSpring water filter. The filter features an NSF-certified coconut shell active carbon filter that provides one year of clean water for a family of four. With a CTO carbon block filter, this machine ensures all chlorine, bad odors and organic chemicals in the water are eliminated. NSF-certified CTO carbon block filter ensures all chlorine, bad odors and organic chemicals in the water are eliminatedRequires assembly for usage Made from metal, plastic and assembly hardwareJumbo filters improve flow rate and reduce maintenance frequency Removes up to 95 percent of sediment, rust, chlorine, heavy metal, VOCs and other contaminantsNSF-certified coconut shell active carbon filter provides one year of clean water for a family of four NSF-certified filter.