D-20A-D Features: -Replacement cartridge.-Level 1 basic filtration.-D-20a granular-activated carbon drinking water filter replacement cartridge.-Granular activated carbon cartridge.-Reduces bad taste and odor, aesthetic chlorine taste and odor and sediment.-Filter life: 1000 Gallons or 12 months. Includes: -Includes cartridge change reminder sticker. Dimensions: -Overall dimensions: 9.75" H x 2.5" W x 2.5" D.