Clear, clean, great-tasting water for drinking and cooking is easier to achieve than ever before with the Culligan family of Direct-Connect under-sink Drinking Water Filters. The Culligan US-DC1-R Under-sink Basic Drinking Water Filter Replacement Cartridge features a twist-on, twist-off cartridge design for easy hassle-free cartridge change. The filter reduces bad taste & odor, aesthetic chlorine taste & odor, and sediment right from your kitchen faucet. The US-DC1-R cartridge has a life of 6 months or 3,000 gallons. The US-DC1 is certified by IAPMO R & T and has a 1-year limited warranty.