The Culligan RC-EZ-1 Easy-Change Water Filter Replacement Cartridge in white is a basic filtration water filter with a flow rate of 0.5 GPM. It is designed to remove aesthetic chlorine taste and odor, as well as particulate Class III contaminants. This cartridge is compatible with models US-EZ-3, US-EZ-4, and US-EZ-1 and is suitable for household use. With a filter life of 12 months or 3,000 gallons, this water filter from Culligan provides clean and refreshing water for your home.