Compatibility:ONLY Compatible with Dockstream Cat Water Fountain PLWF105 / PLWF115 / PLWF005. If any doubt, please check product dimensions. Easy to Install and Clean: This filters for cat water fountain is easy to remove and apply a one, and saves you tons of time when cleaning! Please soak the pet fountain filter and sponge in water for at least 3 minutes before use to stimulate the best filtration effect of the cat fountain filter, and then rinse thoroughly with running water. This keeps cat water fresh for a longer period of time. Healthy Filter Ingredients: The triple circulation filtration consists of activated carbon, ion exchange resin and non-woven fabric. Together, they effectively filter out impurities, such as hair and heavy metals, while improving the taste and quality of the water. Premium pet fountain filters replacement helps to keep your pets healthy and hydrated by providing them with clean and fresh water throughout the day. [Premium 36 Pack Pet Fountain Filters] 36-pack of premium pet fountain replacement filters and 36 Pack of pre-filter sponges packaged and sealed to maintain high quality. Enough supply for 3 to 12 months of use. Replace the pre-filter sponge every 2-4 weeks. [Filter Sponge& Pump Sponge]High density pre-filter sponge can further filter out impurities, fully leverage the filtering effect; High density pump sponge can filter impurities, preventing them from entering into water pump, it can help extend pump life. Product Benefits:Removes impurities Colour:Photo Color Material:cotton Package Contents: 36 x Replacement Filters 36 x Pre-Filter Sponges Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.