Add to Favorite Sellers. Whole-House Water Filter, 20-In. K Hardware Stores is made up of 4 True Value Hardware Stores that have been in business for over 100 years. K Hardware understands customer service & quality products. Let us help meet your needs while in the comfort of your own home. The item “Whole-House Water Filter, 20-In” is in sale since Friday, April 3, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “khardwarestores” and is located in Idaho Falls, Idaho. This item can be shipped to United States.