General description This pack includes replacement filters and pre-filter sponges designed for 3.2L/108oz and 67oz/2L stainless steel cat waterers. The filters utilize a three-layer system to ensure clean and fresh drinking water for your pets. Technical specifications Compatible with 108 oz/3.2 L, 67 oz/2 L, and 84 oz/2.5 L stainless steel fountains Three-layer filter system: cotton layer and activated carbon Regular Replacement Recommended replacement every 2 weeks for optimal performance More frequent changes may be necessary for households with multiple pets Installation Filters and sponges are easy to remove and install Tip: Soak the filter in clean water for 5 minutes before replacing, then rinse thoroughly with running water