Features: Size: 12*2.7*2cm.Composed of 8pcs this set is suitable for the 1.8L pet fountain. Triple filtration: The filter can capture hair and debris. High-density coconut shell-activated carbon can remove fine impurities and microorganisms. Ion exchange resin effectively removes metal ions and prevents calculus. Keep your pet healthy: The pet fountain filters help to improve the taste of the . Therefore cats will drink more and the risk of urinary tract infections can be reduced at the same time. Replacement frequency: Suggested to replace it 2-4 weeks to keep the and fresh. Rinsing before usage: Rinse it before use to the activated carbon dust from shedding into . Specifications: Color: white Material: artificial cotton+activated carbon+resin Quantity: 4pcs8pcs(optional) Size: 12*2.7*2cm Package information: Size: 20*15*5cm Weight: 25g50g Package List: 8* fountain filters