Description: 【Material】: Our TZ-160 Duct Connector Flange is made from metal materials, ensuring long term performance. It is designed to withstand daily wear and tear and resist rust, making it a reliable choice for ventilation systems. 【Efficient Air Flow Design】: The Air Vent Duct Connector is meticulously designed to promote air flow. It helps maintain balanced air pressure within the ventilation system, thereby enhancing its efficiency and performance. 【Easy Installation】: This wall mounted air duct hose flange design is easy to install. It perfectly matches with standard sized air ducts and includes pre drilled holes for effortless installation. 【Wide Applications】: Our Air Vent Duct Connector Flange is suitable for various applications, including exhaust systems or home renovation projects. It's an ideal component for residential, commercial or industrial ventilation systems. 【Enhanced System Performance】: By providing a secure and sealed connection between air ducts, this Straight Pipe Flange helps minimize air leakage to the maximum extent, thereby improving the overall efficiency of the ventilation system. It's a crucial component in maintaining indoor air quality in your space. Specification: Outer Diameter: 16cm/6.30inch Package Includes: 1 Ventilation Pipe Connector  Note: Please allow slightly errors due to manual measurement and different monitors.