This duct connector flange is used to connect the pipe hose to the outside, which is suitable for washing machines, dryer, range hood and many other indoor/outdoor ventilation system ducts. Widely used in home, cellar, garage, office, kitchen, bathroom, factory or apartments, etc.SpecificationColor: BlackMaterial: ABSInterface Outer Diameter: 150 mm / 5.91 inchOverall Size: 180 x 180 x 45 mm / 7.09 x 7.09 x 1.77 inch (L*W*H)Packing List: 1 x Duct Connector FlangeAdvantage1. Make of durable ABS material, lightweight, waterproof, moisture resistant, wear-resistant and pressure resistance, not easy to deform, can be used for a long time;2. There are pre-drilled mounting holes on the pipe connector flange, which can help you install quickly and easily.Instruction1. Fix the connector flange to the reserved hole on the wall with screws;2. Finally, use the hose clamp to fasten the connected pipe of appropriate size.NOTE: Please choose the right size according to your needs.