Drop Hammer Cooling Industrial Fan for Greenhouse Farm

Drop Hammer Cooling Industrial Fan for Greenhouse Farm. Automatic Drop Hammer Shutter: Gravity counterweight shutters close tightly to prevent backwind and dust ingress with no air leakage. Corrosion-Resistant Materials: Hot-dip galvanized frame and 430 stainless steel blades ensure durability in humid farm environments. High-Efficiency Cooling: Large fan blades deliver huge air volume and strong negative pressure for fast ventilation. Energy-Saving Motor: Pure copper waterproof motor ensures efficient operation with low power consumption and noise. Customizable Voltage: Voltage and frequency can be customized to meet specific requirements beyond standard 380V/220V. Imported Quality Components: Features Japanese Mitsuboshi belts and French double-row bearings for long service life. Easy Installation: Wall-mounted design allows for simple installation, stable operation, and minimal maintenance. Comprehensive Warranty: Includes 1-year warranty with free replacement parts for motor or key component failures. Unique drop hammer shutter structure Adopts gravity counterweight hammer design. The shutters can fully open when powered on for smooth air outflow, and close tightly automatically after power cuts. I. Hot-dip galvanized frame and aluminum blades are corrosion-resistant, durable for humid farm environments.