Duct flanges are widely used for air ventilation systems in home, kitchen, bathroom, garage and factory etc.SpecificationColor: GreyMaterial: Galvanized IronInterface Outer Diameter: 144 mm / 5.7 inchDiagonal Mounting Hole Distance: 158 mm / 6.2 inchDistance Between Adjacent Mounting Holes: 80 mm / 3.1 inchBase Outer Diameter: 168 mm / 6.6 inchPacking List: 2 x Duct Connector Advantages1. The connector is made of galvanized iron, which is anti-corrosion, cold-resistant, high-temperature resistant, not easily deformed, and durable.2. The base of the connector has screw mounting holes, no drilling is required, and it is directly fixed on the wall with screws, which is easy to use.3. The surface of the ventilation flange is smooth, which is conducive to connecting the air duct.
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