The Trane FAN4078 3-Blade Fan features a 29-inch diameter, clockwise rotation, 23° pitch, and a 5/8-inch bore, engineered to deliver strong, efficient airflow. Designed for use in Trane condensers and rooftop units, it works by moving air across the coil to support proper heat transfer and maintain system cooling performance. https://www.partshnc.com/29dia-3bld-58-cw-23deg-fan-5