
Drop Hammer Wall Mounted Industrial Fan for Greenhouse. Automatic Drop Hammer Shutter: Gravity counterweight shutters close tightly to prevent backwind and dust ingress with no air leakage. Corrosion-Resistant Construction: Hot-dip galvanized frame and 430 stainless steel blades ensure durability in humid farm environments. High-Efficiency Airflow: Large fan blades deliver huge air volume and strong negative pressure for fast cooling and ventilation. Energy-Saving Copper Motor: Pure copper waterproof motor ensures efficient operation with low power consumption and low noise. Customizable Voltage Options: Voltage and frequency can be customized to meet specific requirements beyond standard 380V/220V. Premium Imported Components: Features Japanese Mitsuboshi belts and French imported double-row bearings for long service life. Easy Wall-Mount Installation: Simple wall-mounted design ensures stable operation with minimal maintenance requirements. Comprehensive After-Sales Support: Includes free spare parts, warranty replacement, and lifelong online technical consultation. We offer detailed installation instructions, operation tutorials and online technical guidance to help customers install and use the machines correctly. We provide a certain proportion of free vulnerable spare parts together with every order for future maintenance.