This Top Fin EF-S Element Filter Cartridge is a reliable and efficient choice for your aquarium. It provides a 3-month supply of filtration for your fish tank, measuring 2.1 inches by 3.7 inches. The filter cartridge is designed for use with the Top Fin brand and is perfect for those who want to keep their aquarium clean and healthy. With its compact size, this filter cartridge is easy to install and maintain, making it an ideal choice for fish enthusiasts. It is suitable for use in all types of aquariums and is perfect for those who want to maintain clear and healthy water for their fish. Get your hands on this Top Fin EF-S Element Filter Cartridge today and provide your fish with the best possible filtration system.