Cold aisle containment encloses the cold aisles to ensure only cold air is supplied to servers. This approach is normally used with in-row cooling and raised floors and is more common in retrofits. Explore sliding and swinging options for cabinet-to-cabinet and cabinet-to-wall. Aisle containment is a cooling system that completely separates the cold supply airflow from the hot equipment exhaust air. This paper reviews both approaches and concludes that cold aisle. Efficient airflow management in data centers relies heavily on proper Hot Aisle and Cold Aisle configurations. To maintain thermal performance, equipment accessibility, and safety, it's essential to follow key spatial guidelines. Whether you need cold aisle.