Rinse it before use to prevent the activated carbon dust from shedding into water. Suggested to replace it 2-4 weeks to keep the water clean and fresh. Activated carbon and an ion exchange resin for filtering hair and residue, remove odors and soften water, getting better water tasting. Up to 10-Pack Premium Activated Carbon Filter, enough for a 6-12 months use. Filters Size is 5 x 5 in, the diameter of inner circle is 1.45 inches. Fit for pet fountains which work with the same size filter, please double check the size before purchg.

Best Sellers Rank: See Top 100 in Pet Supplies. Target Species: Cat. Item Dimensions LxWxH: 0.39 x 0.39 x 0.39 inches. Brand: MOOBONA. Material: Resin. Color: White. Country of Origin: China. : B085G7R514. Manufacturer: Noodoky. Date First Available: March 3, 2020. Item model number: N-10. Product Dimensions: 0.39 x 0.39 x 0.39 inches; 10.55 Ounces.