The 144 inch HVLS industrial ceiling fan is designed for large commercial and industrial spaces including warehouses factories gyms supermarkets and exhibition halls. Equipped with a high efficiency PMSM direct drive motor and five aluminum alloy blades it delivers up to 148322 CFM of powerful airflow while maintaining quiet operation at only 36 dBA. The variable frequency control system provides adjustable speeds from 10 to 81 RPM for precise airflow management. With two interchangeable downrods in 23.5 inches and 39.4 inches the fan supports flexible installation for different ceiling heights. Built with IP55 motor and IP54 controller protection this HVLS fan provides reliable long term performance in demanding environments and helps improve air circulation and energy efficiency. | Breezary | | 144 in 12 ft HVLS Commercial High Volume Low Speed Ceiling Fan with PMSM Motor Variable Frequency Wall Control 5 Blades | 144-inch Black | 144 inch Black | Best Buy