2-Pack Pet Water Fountain Filter Replacement for Catit Flower Cat, Catit Design Senses, Catit Fresh & Clear Stainless Steel Top Cat Water Drinking Fountain- Compatible with Catit Water Fountain Filter - Walmart.com
CATIT Triple Action Pet Fountain Filter, 5 pack - Chewy.com
Triple Action Filter - Catit US
Catit 2.0 - Senses Flower Water Fountain Mini Cartridge (3 Pack)