The Trane FAN03849 2-Blade Fan is a 28-inch diameter aluminum fan with a 30-degree pitch, 1/2-inch bore, and counterclockwise rotation, designed for compatible HVAC applications. It operates by rotating to move air across heat exchange surfaces, supporting efficient heat transfer and proper system operation. This fan is used in compatible Trane air conditioning systems, condensers, an... https://www.partshnc.com/trane-fan03849-2-blade-fan-28-dia-30-pitch-1-2-bore-ccw-aluminum