This replacement filter set is designed for use with Premier Pet Products' Pet Waterer. It includes both foam and carbon filters, which work together to keep your pet's drinking water fresh and clean. These filters effectively remove impurities and odors from the water, ensuring that your pet always has access to clean and healthy drinking water. The filters are easy to install and replace, and are an essential component of your pet's waterer. With regular replacement, they will help keep your pet healthy and hydrated. This set is compatible with a range of Premier Pet Products' Pet Waterers, and is a must-have for any pet owner who wants to ensure their pet's drinking water is of the highest quality. All the products are new. One box contains 2 FORM FILTERS and one box ONLY CONTAINS 1 FORM FILTER. Set includes 3 packs of the Carbon filters. One pack is not open. Two Carbon packs are open, but the filters are new. One of the open packs contain 4 carbon filters the other open pack contains 5 carbon filters.