Hon&Guan 4 x 8FT Aluminum Foil Insulated Flexible Duct and 4 Inch Inline Booster Duct Fan with Speed Controller - 130 CFM

4 INCH DUCTING LIGHTPROOF Thick layer of black PVC on flex duct prevents light leaks. Works with exhaust and intake fans, carbon filters and hooded lights which are 4 in diameter., 3-LAYER TOUGH Hon&Guan dryer exhaust hose keep your ventilation system free of rips and pin holes. The dryer duct is built with 2 layers of aluminum foil with a layer of PET and steel wire helix to preserve the shape, keep your ventilation system free of rips and pin holes., Excellent Performance Duct size: 4” | Dimensions: 7.28 x 3.82 x 3.82 in. | Voltage: 100-240V| Air Presssure: 165 Pa| Noise: 26 dBA, 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., Application Scenarios The 4 inch duct booster fan designed to quietly ventilate grow rooms, bathrooms, kitchens, workshops, basements, attics and etc, in order to boost airflow in HVAC systems.