The RS 221-342 fan filter is designed for 120mm fans, featuring a plastic frame and a fan grill with a filter to ensure clean and efficient airflow. With a height of 12mm and dimensions of 120 x 120mm, this black filter is manufactured in China by the brand RS. Perfect for computer components and networking setups, this unit offers a reliable solution for filtering out dust and debris while maintaining optimal fan performance. This is closed factory stock unopened