Cat Water Fountain Replacement Filter, 8 Filters Pack, Compatible with Most Cat Fountain and Pet Water Fountain, Activated Carbon Filter
Replacement filters for Wonder Careture 2.4L/81oz round cat fountains
Replace filter every 2 to 4 weeks
The diameter is around 5 inches
Before use, please soak the filter in clean water for 5 minutes, then rinse it with clean water for 30 seconds