The Rheem-Ruud 51-102728-28 ECM Outdoor Motor is a high-efficiency component that has been designed for HVAC systems. It is designed specifically for outdoor usage and thus it is durable and reliable in performance. Operating under a standard voltage of 208-230V, this ECM provides a horsepower operating range of 1/3 to 1/2 HP which aids in airflow management with high efficiency. #... https://www.partshnc.com/51-102728-28-rheem-ruud-ecm-outdoor-motor