Duct Booster Vent Fan Air Exhaust Home Blower Grow Metal 4 Inch Inline Ducting Fans Exhausting Kitchen Ventilation ,Easy to Use

-Powerful and high efficient performance. -High-quality steel fan blade, durable and powerful than plastic fan blades. -Lightweight and practical, operates as smooth as any fan we've come across -Extremely quiet, the fan blades are quietly designed with a working decibel less than 60dB. -Use special fully enclosed roller motor, long usable life -Environmental protection and no pollution