This replacement filter pack keeps your pet's AquaBüD'z fountain clean and working well. It includes 3 fountain filters and 3 foam pump filters, enough for 9 to 12 weeks of use. • 6-layer filtration traps hair and debris and removes odours and chlorine • Softens the water for clearer, purer drinking water • Fits AquaBüD'z fountains BZ04815, BZ04816 and BZ04817 Swap filters regularly to keep the water fresh.