Hon&Guan Rubber Coupler Connector Noise Reduction Clamp 4-Inch and Inline Booster Duct Fan with Speed Controller - 130 CFM

Excellent material, the flexible cuff coupler material has good hardness and softness, can perfectly fit all 4 inch accessories and 4 inch duct fan.,Dryer vent connector noise is minimized by absorbing fan vibrations and sound waves generated by airflow through the ductwork.,Widely used, such as air-cooled hoods, garage, attic, bathroom kitchen extractor fan, hydroponics and HVAC ventilation systems, plastic rigid ducting is perfect for DIY and trade use, Energy-Efficient Ventilation This powerful inline duct fan speed of 4500 RPM can create the air flow of 130 CFM, Maximum power consumption is only 6W. Upgrade DC motor & low noise effectively circulating air, quickly move vast amount of air to exhaust odors., Adjustable Controller The 4-inch duct fan includes a variable speed controller, which can allows you to adjust the airflow and noise at will.