Keep your reptile's home clean and healthy with Tetrafauna ReptoFilter Filter Cartridges. This pack of three medium-sized cartridges is designed to fit the Whisper Disposable filter system, ensuring efficient and effective filtration. Crafted in the United States with the utmost care, these cartridges are perfect for reptile lovers looking to keep their pets happy and healthy. Trust in the Tetrafauna brand for all of your reptile supply needs.