The Trane KIT16536 Communicating Power Pack Door is a precision-engineered replacement component designed to securely enclose the communicating power pack in Trane commercial and residential HVAC systems. It functions by protecting internal power and communication electronics while allowing proper alignment and access during servicing. Visit The Website: https://www.partshnc.com/ki... https://www.partshnc.com/kit16536-trane-communicating-power-pack-door