VEVOR 14 in Shutter Exhaust Fan Wall-Mount Automatic Louvers Variable Speed, Sturdy Steel Housing, Low Noise, AC Motor, 1802 CFM Ventilation and Cooling for Attic, Garage, Barn, Greenhouse, Workshop

Rapid Venting: This shutter exhaust fan delivers 1802 CFM to quickly expel stale air, floating dirt, heat, and bad smells, keeping indoor air fresh. Also works as a high-airflow exhaust fan for sheds and workshops
Smooth Variable Speed: Stepless variable-speed control puts airflow at your fingertips. The included controller lets you dial the exhaust fan from a gentle breeze to a powerful blast to suit different ventilation needs
Premium AC Motor: With 1600 r/min and 47.8W power, this attic fan delivers up to 7.5 m/s airflow while running smoothly with low noise, offering efficient and stable ventilation for a quiet, comfortable space
Tough Build: Steel housing provides high rigidity and resistance to deformation, handling damp conditions and rain better than plastic. Built tough for demanding attic exhaust fan and ventilation setups
Rain Guard: Shutters open when powered for ventilation and deodorizing, then close when off to help block rain and small debris, making it a reliable choice among exhaust fans for protected airflow