7.3m Powerful Big Industrial Fan for Warehouse Ventilation and Cooling

7.3m Powerful Big Industrial Fan for Warehouse Ventilation and Cooling. Energy Saving Efficiency: Saves about 90% energy compared to common small fans with low power consumption. Lifetime Maintenance Free: Features PMSM motor with no gears or lubricating oil, ensuring zero maintenance. High Rigidity Aluminum Blades: 2mm thick aluminum alloy blades offer high strength, toughness, and corrosion resistance. Comprehensive Safety Protection: Includes five layers of safety measures and VFD protection against overload and phase loss. Versatile Voltage Options: Supports 220V/380V/415V and 50/60Hz frequencies for global compatibility. Large Coverage Area: 7.3m model covers up to 1200m2 with 13800m3/m air volume for effective ventilation. Low Noise Operation: Designed with VFD and PMSM motor to effectively suppress noise and vibration. OEM Customization Available: Accepts OEM orders with flexible customization for power, voltage, and diameter.