Features: Multilayer filtration technology effectively removes impurities, odors, and bacterias, ensuring clean water for cats in pet water fountain filters. Suitable for WF050 and WF060 series pet water dispensers, use nonwoven fabric for safe friendly hydrations solution. Great for cats households or pet owners searching great cats water fountain replacement filters for various model. Perfectly for automatic cats waterers place in kitchens, living room, or feeding area . Maintains great water quality in circulating pet fountains through monthly replaceable moon shape filter cartridges with multilayered purification. Specifications: Product Dimension: Approx. 2.8x11cm/1.1x4.33inch Component: Nonwoven Fabric, active carbon Type: 01/02/03 Package Includes: Type 01: 4pcs Pet Fountain Filters with Foam Type 02: 8pcs Pet Fountain Filters with Foam Type 03: 16pcs Pet Fountain Filters with Foam note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color the item.