Clear, clean, great-tasting water for drinking and cooking is easier to achieve than ever before with the Culligan family of EZ-Change Drinking Water Filters. The Culligan US-EZ-1 Under-sink Drinking Water Filter System features a twist-on, twist-off mechanism, quick-connect fittings, and double water shut-off. The filter reduces bad taste & odor, aesthetic chlorine taste & odor, and particulate class III. The US-EZ-1 cartridge has a life of 12 months or 3,000 gallons. The package includes filter head with built in bracket, RC-EZ-1 Basic Filtration replacement cartridge, mounting screws, and filter change reminder sticker. The US-EZ-1 is certified by IAPMO R & T and has a 2-year limited warranty.