[【Compatibility】：This replacement filter is only compatible with the 71zo/2.1L PLWF002 capsule cat water fountain.Size: 6.8"x3.5"X0.4"(LxWxT) .Please ensure that you have the correct water fountain model before purchase. 【Effective Filtration】: The filters feature high-density non-woven fabric to capture pet hair and impurities activated carbon to remove chlorine and odors and ion exchange resin to eliminate heavy metal ions ensuring the purity of the water. 【Enhanced Pump Performance】: The replacement pre-filter sponge effectively filters out hair and debris preventing clogging and prolonging the lifespan of your fountain pump. 【Easy Installation】: These filters are designed for a perfect fit and can be easily replaced in the Capsule Cat Water Fountain PLWF002 making maintenance a breeze. "【Important Notes】: Please soak the filter for 5 minutes before use. For your pets health we recommend changing the filter and sponge every 2-4 weeks." "【Friendly Customer Service】：Youll get 8 cat water fountain filters+8 sponges.We provide 12 months of free replacement for quality issues. If you have any questions about the product please let us know and we will reply within 24 hours!"]