1、Fan frame, fan blade, louver are made of 304 stainless steel material, rust and corrosion resistant, durable;
2、For the frame,the material is optional: galvanized sheet, 201 stainless steel and 304 stainless steel.
3、The fan is composed of wind blade,motor, frame, protective nets, shutters and other components. Motor-driven fan generates airflow.
4、The shutters can open automatically after power on,when powered off the shutters closed automatically,too. It can prevent outdoor dust, fore...