The A903-FAN-F Cisco Fan Tray with Filter is a replacement cooling component specifically engineered for the ASR 900 Series routers. This tray integrates a high‑efficiency fan and an internal filter to maintain optimal airflow while preventing dust and debris from entering the chassis. Designed to match the original equipment specifications, it fits seamlessly into the router’s fan bay and supports reliable operation in demanding network environments. Installation is straightforward, requiring no additional tools, and the filtered airflow helps preserve internal components, contributing to sustained performance and extended equipment lifespan.