VEVOR 16" Shutter Exhaust Fan with Variable Speed Temp Humidity Controller | 3000 CFM Wall Mounted Attic Fan Automatic Shutter, EC Motor & Timer, Ventilation Cooling for Garage, Greenhouse, Shed, Black

Rapid Venting. This shutter exhaust fan delivers 3000 CFM to quickly expel stale air, floating dirt, heat, and smells, keeping indoor air fresh. Also works as a high-airflow exhaust fan for sheds and workshops

Smart Programming. This fan features an intelligent controller with temperature and humidity triggers, offering up to 10 speed settings that automatically adjust to changing conditions. Multiple modes, timer and alarm, full control for any situation

Premium EC Motor. 1400 RPM and 98W provide up to 9 m/s airflow while running smoothly with low noise, efficient and stable for a quiet, comfortable experience. Ideal as an attic fan for year-round ventilation

Tough Build. All-metal steel construction offers high rigidity, deformation-resistant, and handles damp and rain, more sturdy than plastic and ready for harsh weather

Rain Guard. Shutters open when powered for ventilation and deodorizing, then close when off to block rain and small things, reliable protection for an attic exhaust fan setup