The Nordyne 667345R 18" Blade CW helps maintain efficient airflow for reliable HVAC system performance. This clockwise-rotating fan blade is designed for use in compatible condenser units and other HVAC equipment, where it moves air across the condenser coil to support effective heat transfer. It works by attaching to the fan motor and generating consistent airflow during operation, h... https://www.partshnc.com/667345r-nordyne-18-cw-blade