THIS SYSTEM INCLUDES A DUAL MEMBRANE WATERGUY REVERSE OSMOSIS SYSTEM for hard City Water. THIS ALSO INCLUDES MATCHING WATER SOFTENER AND MATCHING CARBON BACKWASH FILTER AND MATCHING TROJAN UV STERILIZER. (for large homes/large families). Another product built to last a lifetime by WATERGUY REVERSE OSMOSIS. The item “Whole house reverse osmosis system whole house RO whole house filtration” is in sale since Monday, November 5, 2018. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filters”. The seller is “waterman55″ and is located in Canal Winchester, Ohio. This item can be shipped to United States.