Greenhouse Used Drop Hammer Ventilation Exhaust Fan 1100*1100*400mm

Greenhouse Used Drop Hammer Ventilation Exhaust Fan 1100*1100*400mm. Automatic Drop Hammer Shutter: Gravity counterweight design closes 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 high airflow and strong negative pressure for fast ventilation and cooling. Energy-Saving Motor: Pure copper waterproof motor ensures efficient operation with low power consumption and noise. Customizable Voltage: Motor voltage and frequency can be customized to meet specific regional requirements. Low Maintenance Design: Imported double-row bearings and self-cleaning blades require free maintenance and offer long service life. Versatile Applications: Ideal for poultry houses, greenhouses, and industrial workshops with wall-mounted installation. Comprehensive Warranty: 1-year warranty covers free replacement of motors or key parts failing under normal use. Installation & Usage Guidance. Warranty Replacement Service.