4 inch Inline Duct Fan Ventilation Quiet Exhaust Blower Exhaust Fan 30-36W

High Wind Pressure: With a wind pressure of 105-125pa, this duct fan can deliver air over a greater distance. Low Noise: With a working decibel of 26-31db, this duct fan can be operated with low noise, creating a quiet and comfortable atmosphere for you. High Adaptability: It has an operating ambient temperature ranging from -20 ℃ to 60 ℃, which can be used on many occasions with high adaptability. Easy to Install/Disassemble: You can easily install/disassemble it without much effort and time because of its simple structure. Guaranteed After-sales Service: We aim to provide quality products and services, if you have any problems, please feel free to contact us, we will reply and solve the problem for you as soon as possible.