Protect cooling performance at the cabinet level with a purpose-built top air sealing fitting for Net-Access cabinets. The Panduit Cool Boot is designed to close 3" x 5" top openings where cables exit through the cabinet roof, reducing the amount of hot air that can recirculate into the cold aisle. Its airtight fabric and Ultra-Cinch tie help form a tighter seal around cable bundles, improving airflow control without adding complexity to the rack layout. This is the kind of detail that matters in dense network environments. By minimizing bypass air, the fitting helps preserve cooling efficiency, reduce strain on room-level HVAC systems, and support more stable operating conditions for active equipment. It is intended for use with 700mm, 800mm, and 1,000mm wide Net-Access cabinets, making it a practical fit for standardized enterprise deployments. For infrastructure teams managing thermal margins, this accessory offers a simple way to improve cabinet sealing where it counts most: at the point of cable egress. The result is cleaner airflow, less wasted cooling, and a more disciplined rack environment.