The PurePlus CTO10 Filter is a 10″ x 2.5″ sintering activated carbon block water filter designed for household use. It is compatible with various brands such as Omnifilter, Kenmore, Whirlpool, Dupont, Culligan, and GE. The filter is made of black plastic and uses carbon block filtration method to remove chlorine contaminants from the water. This product may contain chemicals known to cause cancer or birth defects, so it is important to be aware of the California Prop 65 Warning. With a unit quantity of 1 filter, this PurePlus filter is a reliable option for purifying your water supply.