Features: This is the filter element specially designed for our 3L automatic pet water dispenser, other filter elements in the market won't fit the water dispenser. With activated carbon inside, it can remove impurities and odors in the water, ensuring your pet's health. Made of Premium ABS material, high-quality and durable. It is recommended that you change the filter element once a week while using the pet water dispenser. If you have any questions, please in time, are here to help you. Specifications: Material: ABS, Activated Carbon Color: White Size: 9*9*1.5cm3.5*3.5*0.6in Weight: 35g1.2oz Package List: 1*Filter Element