The MRCOOL M14DSR2436A Signature Series Adapter Kit is a 14-inch square-to-round duct adapter designed for downflow applications with compatible 2–3 ton Signature Series package units. It provides a smooth transition between the package unit’s square duct connection and round ductwork, helping maintain efficient airflow and a secure connection. This adapter is particularly useful when... https://www.partshnc.com/mrcool-signature-downflow-adapter-kit-m14dsr2436a