Feature: Rapid Venting: This shutter exhaust fan delivers 3000 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 Premium AC Motor: 1480 RPM and 157W provide up to 8.8 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 Effortless to Use: Comes with a prewired power cord, no wiring needed. Quick installation for fresher air fast; great as a garage exhaust fan upgrade Package Content 1 x Shutter Exhaust Fan 1 x User Manual 4 x Expansion Bolts M8.0x50