Unused, ready to use. 3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP903, Reduces Sediment, Chlorine Taste and Odor, 304 Stainless Steel. The item “3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System” is in sale since Saturday, March 7, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “rootpaste” and is located in San Francisco, California. This item can be shipped to United States.