The PurePlus RWF4700AC Refrigerator Water Filter is a single new unit designed for household use. It is a white plastic filter with a capacity of 200 gallons and is compatible with the purplus model. This filter utilizes a carbon/charcoal filtration method to remove chlorine taste and odor, providing clean and refreshing water for your kitchen. Made by PurePlus, this water filter is a reliable and efficient solution for purifying your tap water and improving the taste of your drinks.