48,000 Grains 10% Resin, Metered On-Demand, Stainless Steel Bypass, Ships Pre-Loaded For Easy Installation, Duraline Water Softener Upgraded 10 % Resin -- Whole house water softener, Mechanical Design for added durability Free stainless steel threaded bypass for easy installation This complete water softener system comes with a 5 yr warranty on the valve and 10 yrs on the tanks Whole house water softener is great for upto 40gpg of water hardness We love to help out customers during installation & programming