Culligan D-20A Drinking Water Replacement Cartridge
Culligan D-20A Level 1 granular activated carbon drinking water filter cartridge reduces chlorine, bad taste and odor.  It has a high surface area for maximum adsorption and has a filter life of up to 12 months or 1000 gallons.   This filter cartridge fits model numbers US-550, US-600, US-560, US-560K, CTR-210, SY-5167, and RO-3167 Plumbed-In Reverse Osmosis System.  The filter is NSF Certified and a 2 year warranty. It also includes a change reminder sticker and is recommended for city and well water supplies.