The Trane FAN04077 3-Blade Fan is a replacement condenser fan designed to move air efficiently across the outdoor coil of compatible Trane HVAC systems. Driven by the condenser fan motor, its three-blade design circulates air to help dissipate heat from the refrigerant during the cooling cycle. This fan is used in compatible air conditioners, heat pumps, and packaged HVAC equipment. I... https://www.partshnc.com/trane-fan04077-3-blade-fan-19-dia-pitch