Z-shaped Round Duct Adapter

The Z-shaped adapter (commonly known as a “duck”) is a special ventilation fitting designed to connect air ducts installed at different vertical levels or with horizontal offset. It is used when ducts are positioned higher or lower relative to each other, or shifted to the left or right from the main duct axis.
The use of a Z-shaped adapter enables efficient duct routing in confined spaces and complex building layouts. Such adapters are widely applied in modern ventilation and air conditioning systems to ensure balanced air distribution throughout the building.
In addition, Z-shaped adapters help reduce airflow velocity, minimize vibration, and lower mechanical loads on the duct system, improving durability and acoustic performance. The adapters are manufactured from galvanized steel and can be customized according to project requirements.