Replace your Everpure Filter Cartridge to keep drinking water fresh.Cartridge replacement for QC2-AC Everpure Water Purifying System lasts up to one year. It fits models QL2 or QL3. Protects you from waterborne bacteria, viruses, mold and algae. Reduces the taste and odor of chlorine, dirt, rust, cysts and asbestos. 1/2 GPM flow rate.Manufacturer warranty of one (1) year from the date of manufacture, or one (1) year of use, with original proof of purchase. Under no circumstances will the terms of the limited warranty extend beyond two (2) years of manufacture date.