Cisco NCS2015-FTA= computer cooling system part/accessory

Airflow through the chassis is front-to-back, facilitating hot-aisle/cold-aisle installations. A replaceable fan tray containing eight fans divided among two separate circuits sits above the line cards, and also houses timing and alarm input and output connectors. Air is drawn in through a 2-inch input plenum at the bottom of the chassis, and expelled at the top-rear.