Ice Maker & Refrigerator Drinking Water System, Includes Filter Head With Built In Bracket, RC-EZ-3 Cartridge, Mounting Screws, Filter Change Reminder Sticker, Features Twist On, Twist Off Mechanism, Quick Connect Fittings, Double Water Shut Off, Cartridge Life 6 Months/500 Gallon, Reduces Bad Taste & Odor, Chlorine Taste & Odor, Sediment, Lead, Cysts Such As Cryptosporidium & Giardia, Turbidity, Atrazine, Lindane & Particulate Class I, Level 3 Advanced Filtration, NSF Certified, 2 Year Limited Warranty.