AO Smith Central Water Filter S ystem. Obsessively engineered to provide pristine water throughout your entire home. Reduces 97% of chlorine, taste and odor providing healthy water for up to 6 years or 600,000 gallons. Perfect for households of 4 or more people. Improves skin and hair softness reduce exposure to harsh chlorine that can cause excessive drying. Eco-friendly – no drainage, back flushing, or water waste. Better quality air stops chlorine from evaporating into the air you breathe – cleaner air throughout your home. Includes one Central Water Filter, shut-off valve, nipple, and hose adapter. Recommended to replace filter after the expected time frame of up to 6-years or 600,000 gallons. The item “A. O. Smith Single-Stage 7-GPM GAC Whole House Central Water Filter System” is in sale since Tuesday, April 16, 2019. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filters”. The seller is “trade_nation” and is located in Jeffersonville, Indiana. This item can be shipped to United States.