【More Powerful and Wider Compatibility】: The filter is compatible with other 1.6L/2.0L/2.4L filters of the same size; our filter: 4.9 inches/12.5 cm (diameter), 1.5 inches/3.8 cm (inner diameter). Not compatible with 3.0L water dispensers. Please check the slot size of your water dispenser before purchasing.【Quadruple Filtration】: 1. Ion exchange resin can soften water and purify water sources; 2. Coconut shell activated carbon can remove odors from water; 3. High-density filter cotton can isolate hair and debris; 4. Non-woven fabric can filter dust well.【Powerful Pet Protection】: We attach great importance to the health of every pet, and we are constantly improving and updating, just to better protect your pets. Protect your pet's health.【Easy to Use】: Rinse the filter thoroughly with water before use, and then easily install it on the water dispenser. To ensure clean water, the filter should be replaced in time. Replace within 2-4 weeks.