This duct pipe reducer connector is used to connect the pipes of equipment such as bathroom fans, range hoods and dust collectors to the ventilation duct system, you can connect two air ducts of different diameters to create a seamless ventilation system duct. Suitable in home, offices, kitchen, factory or apartments.SpecificationColor: BeigeMaterial: PPInner Diameter: 200 x 110 mm / 7.87 x 4.33 inch (Big*Small)Size: 130 x 4 mm / 5.12 x 0.16 inch (H*T)Packing List: 1 x Duct Pipe Reducer ConnectorAdvantage1. Make of durable PP material, lightweight, waterproof, moisture resistant and wear-resistant, fire-resistant and pressure resistance, not easy to deform, can be used for a long time;2.