Red Seal Sheet Metal Worker Practice Exam

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What is the main purpose of a cleat in duct assembly?

To improve airflow through ductwork
To secure the ductwork sections together
To provide insulation against sound
To reduce energy loss in ducts

The correct answer is: To secure the ductwork sections together

The main purpose of a cleat in duct assembly is to secure the ductwork sections together. Cleats are typically metal strips that are used to fasten and hold two or more sections of ductwork tightly together to form a secure joint. This fastening plays a critical role in ensuring the structural integrity of the duct system, preventing leaks, and maintaining optimal airflow. A well-secured duct assembly minimizes the risk of disconnections, which can lead to air leakage and reduced system efficiency. In addition to providing stability, cleats also help facilitate the installation and alignment of each duct section, making the entire assembly process more efficient. This secure connection is essential for maintaining the overall performance and longevity of the HVAC system.