Wide Compatibility:8 packs high quality replacement filters. Size: 1.1x1.7x0.6inch, compatible with Cupcake ceramic pet fountain,cat water fountain stainless steel, 88oz/2.6L Etship pet fountain,360° super silent cat water dispenser,Huicocy cat water fountain stainless steel,67oz/2L pet fountain with Ultra-Quiet design, Cnikpet cat water fountain stainless steel. Replacement Period:Carbon filter needs changing every 2 to 4 weeks while foam filter needs cleaning every 2 to 4 weeks and replacing every 2 to 4 months for better water quality, mainly depending on water condition and the number of pets. Dual Filtration System:The carbon filter helps purify the water and eliminate bad odors, while the foam filter blocks out any hair, dust or food debris. Easy to Use:Please rinse the replacement filters with water thoroughly before use to remove any excess or loose charcoal dust.The package includes 8 carbon filters and 2 foam filters.dust. Keep Your Pet Healthy:Each filter is composed of a