Vertiv SA1-01002XLNB, Geist SwitchAir Passive 1U Airflow Management Device for Switches with Rear Air IntakeNetwork switches, load balancers, and routers typically sit at the top and back portion of the rack. This placement makes it difficult for cold air to travel from the front of the rack to the air intakes of the network switch equipment, increasing chances of failure over time. SwitchAir helps prevent failure by channeling cool air from the front of the rack to the air intakes regardless of where the equipment is mounted.