【Easy to Install】Hon&Guan mixed flow inline duct fan's blade and the body are made of high quality plastic. Quick removal and easy maintenance
【Energy-Efficient Ventilation】This powerful blower fan speed of 2200 RPM can create an air flow of 116 CFM. Upgrade 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 adjust the air volume in ten steps, and the noise level is only 31 decibels even at the maximum air volume
【High Quality Material】Durable metal housing Ideal for long duct runs.Mixed flow design combined with a PWM-controlled motor, 4 inch radon fan suitable for air temperatures from -4℉ to 140℉.
【Application Scenarios】Designed to quietly ventilate grow tents, transfer heating/cooling to rooms, circulate fresh air, cool AV closets, exhaust odors. The HF Mixed Flow Fan are the ideal solution for air exhaust systems for rooms with high humidity such as bathrooms and kitchen etc.