[12 PACKS IN ONE SET] You will get 12 pieces of pet fountain filters, sufficient for 6-12 months of regular use and replacement. High quality and cost-effective. [COMPATIBILITY] This pet fountain foam filter is compatible only with the WF020TP Fully Transparent Pet Water Fountain, with dimensions of 4.7 x 1.18 x 0.63 inches (12 x 3 x 1.6 cm). [MULTIPLE FILTRATION] Features a high-density activated carbon filter with a triple filtration structure to effectively improve water quality and oxygen levels, providing your pet with cleaner and healthier water. [KEEP YOUR PET HEALTHY] The replacement foam filter helps remove impurities, hair, chlorine, heavy metals, and odors, keeping your pet's water fresh and clean. Helps extend the life of your water fountain pump. [EASY TO USE] These water fountain filters are easy to remove for pump cleaning and filter replacement. It is recommended to replace every 2 to 4 weeks to maintain optimal performance and water freshness. Material: Sponge Color: Black and white Package Contents: 12 x Pet fountain replacement filters Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.