The Vevor 20" shutter exhaust fan is designed to provide powerful ventilation for attics, garages, barns, greenhouses, and workshops. It delivers up to 4499 CFM airflow with stepless variable speed control, letting you adjust ventilation output as needed. Its steel housing and rust-resistant finish help support long-lasting performance in demanding environments. The automatic louvers open during operation and close when powered off to help block rain and debris. A low-noise AC motor provides efficient airflow while maintaining quieter operation.
Manufacturer direct shipping from CA, NJ, & TX