What connectors are used to secure sections of rectangular sheet metal duct to the main supply line?

The correct response involves the use of S connectors and drive clips, which are specifically designed for joining sections of rectangular sheet metal ductwork. These connectors provide a secure mechanical connection that can withstand the pressures of air movement within the duct system. S connectors, shaped like the letter “S,” allow for a strong connection while accommodating slight misalignments between duct sections. Drive clips are used to fasten the sections tightly together, ensuring an airtight seal to maximize system efficiency and performance.

In contrast, other types of connectors like circular connectors are primarily used for circular duct systems and are not applicable to rectangular ductwork. Flange joints, while effective, are used in larger-scale systems requiring more robust installation methods and are not as commonly employed for standard rectangular sections. Tape connectors, although sometimes used in less formal applications, do not provide the same level of durability and reliability as S connectors and drive clips, especially in high-velocity environments. Thus, the combination of S connectors and drive clips is the most suitable option for securing rectangular duct sections.