Universal slim design installs quickly and easily to replace cartridge of Culligan undersink filter Nos.US-550 and US-600. Also fits Culligan Nos.US-560, US-560K, CTR-210, and SY-5167. High surface area with activated carbon granules to provide clean, fresh drinking and cooking water by reducing unpleasant tastes and odors, and chlorine taste and odor. Up to 12-month/1,000-gallon life. NSF International tested and certified.