20FT High-Performance Hvls Electric Big Size Aluminum Ventilation Fan System

20FT High-Performance Hvls Electric Big Size Aluminum Ventilation Fan System. Energy Efficiency: Saves about 90% energy compared to common small fans with low power consumption. Durable Aluminum Construction: Features aluminum alloy blades with 2mm thickness for high rigidity and corrosion resistance. Lifetime Maintenance Free: Equipped with PMSM motor requiring no lubricating oil and offering maintenance-free operation. Advanced Safety Protection: Includes five layers of safety measures and VFD protection against overload and voltage surge. Versatile Voltage Options: Supports 220V/380V/415V and 50/60Hz frequency for global compatibility. Low Noise Operation: Designed with simple structure and VFD technology to effectively suppress noise and vibration. Comprehensive Certifications: Certified by ISO, CE, CCC, and ROHS standards for quality and safety assurance. Customizable OEM Service: Offers OEM customization options subject to MOQ requirements.