What type of patented transverse connection is roll formed on large rectangular HVAC duct?

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The type of patented transverse connection that is commonly roll formed on large rectangular HVAC duct is known as TDC/TDF. This design stands for Top Dead Center (TDC) and Top Dead Flange (TDF), which are both critical for enhancing the efficiency and integrity of duct systems.

TDC/TDF connections offer benefits such as a strong and secure seal, which helps minimize air leakage, an important factor in heating, ventilation, and air conditioning systems. The roll-forming process allows for the creation of seams that are not only robust but also ensure quick assembly during installation. The design incorporates a flange that can accommodate various types of fasteners, thus providing flexibility in both manufacturing and installation.

Furthermore, this connection type is popular in modern HVAC systems due to its ease of use and compatibility with automated production techniques. It provides a clean and professional finish, which can be crucial in applications where aesthetics are also considered. Overall, TDC/TDF connections are instrumental in maintaining the performance and reliability of HVAC ductwork systems.

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