Garvee 20 Inch EC Motor Shutter Exhaust Fan with Touchscreen Controller for Temp Humidity and Speed Control, 4000 CFM 10-Speed V

High-Efficiency EC Motor: This 20 inch shutter exhaust fan uses an advanced EC copper motor with dual ball bearings, delivering 4000 CFM airflow at 1,772 FPM and 1650 RPM. This industrial exhaust fan ensures stable, quiet, and efficient operation for heavy duty use | Smart Touchscreen Controller: The wall mounted exhaust fan features a large touchscreen controller supporting up to 3 fans via Type-C ports. Enjoy 10 adjustable speeds, precise temperature and humidity control, and timer or cycle settings for automatic high cfm ventilation | Easy Installation: With the heavy duty exhaust fan pre-assembled and a 8ft power cord, setup is quick and hassle-free. Ideal for secure wall or ceiling mounting in garages, attics, sheds, greenhouses, storage rooms, workshops, basements, and other exhaust fan uses | Automatic Aluminum Shutters: This quiet industrial exhaust fan features automatic aluminum shutters that open while operating and close when off, blocking dust, debris, and insects. Keep your garage, attic, or shed cleaner with less maintenance, while ensuring safe airflow | Industrial Durability & Quiet Performance: Crafted with a galvanized steel frame and aluminum blades, this high cfm wall exhaust fan offers corrosion resistance, efficient heat dissipation, and operates at =70 dB for quiet, stable use in commercial and residential spaces