Axial fan assembly for HVAC and ventilation applications. Model ZL‑554×148×12‑3KFN (RoHS compliant). Measures 554 mm in diameter and 148 mm in depth. Designed for high‑airflow, low‑noise operation in condensers, air handlers, and equipment requiring efficient axial cooling. Durable construction with balanced blades for smooth, reliable performance. Suitable as a replacement for systems using a 554×148 axial fan.