This plastic air duct connector is designed to facilitate a transition from square to round ducting, making it an ideal choice for HVAC systems, and fresh air systems. The flange design simplifies installation, allowing for a integration into existing ductwork. Enhance your ventilation system with this reliable and versatile connector. Features -Color:Black -Material:ABS -Size:16.50X16.50X7.00cm/6.48X6.48X2.75in -Selected material: constructed from durable ABS, this air duct connector is built to last -Easy to install: the roundtosquare design simplifies the installation process, making it easy to connect to different duct systems -Enhanced ventilation: with airflow capability, this flange improves air circulation, enhancing the efficiency of the ventilation system -Consistent performance: the robust construction ensures stable and consistent airflow, essential for the proper functioning of the duct system -Versatile application: suitable for industrial use, this flange connector is various duct systems reliably and efficiently Package list: 1 x flange connector