4" 100 CFM Exhaust Inline Duct Fan,2100-2600rpm Speed Blower Kit High Efficiency

High Durability: The duct fan is made of ABS that has good toughness and good corrosion and heat resistance, so it is more durable and can be used for a long time. Easy to Install/Disassemble: You can easily install/disassemble it without much effort and time because of its simple structure. High Adaptability: It has an operating ambient temperature ranging from -20 ℃ to 60 ℃, which can be used on many occasions with high adaptability. 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 Wind Pressure: With a wind pressure of 105-125pa, this duct fan can deliver air over a greater distance. High Efficiency: With a speed of 2100-2600rpm and an air volume of 133-170m³/h, it has more powerful suction with high efficiency. Waterproof and Dustproof: With the Ip44 protection grade, this duct fan can effectively prevent water and dust from entering the machine