General description The 32 Pieces Stainless Steel Cat Water Fountain Filter set includes 16 carbon filters and 16 pre-filter sponges, designed to ensure your pet has access to fresh and healthy drinking water. Each filter is individually packaged for effective sealing, maintaining their quality until use. Technical specifications Includes: 16 carbon filters and 16 sponge filters Compatibility: Suitable for 3.2L (108oz) and 2L (67oz) stainless steel cat drinkers Material: BPA-free materials Compatibility and accessories Compatible with 6 different models of stainless steel cat fountains Installation Before replacing the filter, rinse it thoroughly under running water Install the filter in the cat fountain after rinsing Usage Recommended to change the filter every 2 to 4 weeks, depending on the number of cats in your home Effectively filters pet hair, food debris, absorbs odors, and softens water Other information Features a three-layer cyclic filtration system with activated carbon and