The product is a lot of 4 U. S. Toyo Fan GR60-1 fan guards/filters specifically designed for 60mm size fans. These black filters are essential for keeping out debris and ensuring optimal airflow for your electronic devices. With dimensions of 0.25" in height and 2.360" in both length and width, these filters are a perfect fit for maintaining a clean and efficient cooling system in your computer or other electronic setup.