Description: 100% Brand New And High Quality Specifications: name: Pet Drinking Fountains Filter replace The Pet Water Dispenser Filter In Summer For 1 To 2 Weeks And In Winter For 2 To 4 Weeks. If Multiple Pets Are Using The Fountain, They Need To Be Replaced More Frequently. remove Impurities And Odor, Keep The Water Tasting Fresh. suggest Replacing Charcoal Filters Every 2 To 4 Weeks To Keep The Water Clean. size: 128MMX30MM Features: rethink Pet Drinking Water, Double Upgrade The Filter Element, Improve The Filtration And Purification Effect. love It And Give It Health, The Smart Pet Water Dispenser Filter Element Can Remove Hair And Soften The Water Quality. quadruple Filtration, Comprehensive Purification, Enhance The Taste, Quadruple Filtration System, 24-hour Uninterrupted Cycle Filtration, Layer By Layer Intercepts Various Impurities, Protect The Health Of Pets. high-quality Filter Elements, Food-grade Raw Material Suppliers, Filter Raw Materials, And Food-grade Water Storage Raw Materials Purchased Worldwide, Allow Pet Water Dispensers To Purify More Fresh And Good Water. coconut Shell Activated Carbon Is Born With Well-developed Micropores And Has A Strong Adsorption Capacity For Harmful Gases; Ion Exchange Resin Can Replace The Hardness Ions Such As Calcium And Magnesium In The Water To Soften The Water. Note: please Allow 1-2cm Errors Due To Manual Measurement. due To The Difference Between Different Monitors, The Picture May Not Reflect The Actual Color Of The Item. Include: 4/8/12 Set Pet Drinking Fountains Filter.