The carbon media in this filter reduces chlorine taste and odor, scale, rust and scale. It features a sanitary quick change. Aqua-Pure whole house large diameter; replacement filter cartridge. Twist and lock design. The item “Aqua-Pure AP917HD-S Whole House Large Diameter Replacement Filter Cartridge” is in sale since Wednesday, January 10, 2018. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filters”. The seller is “jbtoolsales02″ and is located in Farmington, Michigan. This item can be shipped worldwide.