APC ACCS1001 Rear Air Containment Assembly | NetShelter SX, 42U

Keep hot exhaust where it belongs and preserve cooling efficiency at the rack edge. APC ACCS1001 is a rear air containment assembly designed for NetShelter SX 42U enclosures and 600 mm InRow environments, giving infrastructure teams a direct way to manage airflow at the source. In dense deployments, uncontrolled rear airflow can reduce cooling effectiveness, raise return-air temperatures, and force unnecessary capacity headroom. This assembly helps create a more controlled thermal path so the cooling system can do its job with less waste. It is a practical fit for environments that need predictable airflow behavior around high-load racks, especially where aisle containment and InRow cooling are part of the design. For teams standardizing APC rack ecosystems, this accessory adds value by aligning containment hardware with the enclosure and cooling architecture already in place. It is the kind of component that supports higher-density planning without introducing complexity into the rack footprint. When uptime depends on thermal discipline, rear containment is not cosmetic — it is part of the operating model.