The air duct reducer or increaser is used for connecting solid or flexible ducts in ventilation systems, creating a stable connection between air ducts while maintaining airflow efficiency. Widely used in HVAC, ventilation, heating and cooling, fresh air supply systems, bathroom or kitchen exhaust, grow tents, dryer vent adaptation, cooker hoods, air-cooled hoods, embedded fans, roller dryers, dust collection systems, etc.SpecificationMaterial: Galvanized SteelColor: Silver ToneSize: 150mm Male to 80mm Male Round Duct Reducer Adapter (5.91 Inch to 3.15 Inch)Smallest Outer Diameter: 80mm/ 3.15 InchBiggest Outer Diameter: 150mm/ 5.91 InchLength: 120mm/ 4.72 InchThickness: 0.6mm/ 0.
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