Features: Say goodbye to dirty and unpleasant tasting water! Our easy to replace and easy to clean filters provide a great solution for maintaining the cleanliness of your pet water supply. They can filter hair and heavy metals, and improve the taste of water, so that pet can drink clean water all day, which help to increase water consumption. In order to prevent carbon dust (which will not harm your pet) from falling into the water, please soak the filter in water for 5 minutes and rinse it thoroughly with tap water before use. According to the pet's drinking frequency and the number of pet using the fountain, change the filter every 2-4weeks. Measure your fountain before ordering and check whether the filter is suitable for your fountain. Suitable for pet owners, and pet enthusiasts, our filters work with most popular pet water dispensers, offering convenience for many users. Specifications: Component: Nonwoven Cloth Size: About.14.6x14.6x1.52cm/5.75x5.75x0.6inch Quantity: 4Pcs/8Pcs/12Pcs Package Includes: 4Pcs/8Pcs/12Pcs Filters note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.