Keep heat from accumulating at the top of the enclosure with a roof fan tray designed for APC NetShelter SX deployments. The ACF501 runs on 115 VAC and mounts at the rack roof to move warm air out of the cabinet where it naturally rises. That makes it a practical fit for environments that need consistent thermal control without moving to a larger cooling system. For infrastructure teams, the value is simple: better temperature management in the space you already have. Roof-mounted extraction helps support equipment reliability in high-density racks, especially where front-to-back airflow alone is not enough. It is a focused cooling accessory for teams that want to protect uptime, reduce thermal hotspots, and keep cabinet temperatures more predictable. Because it is purpose-built for the NetShelter SX platform, the tray integrates cleanly into the enclosure architecture rather than adding improvised airflow hardware. That matters in production rooms where serviceability, fit, and thermal consistency all carry operational weight.