True or False: The duct identification number only provides the job and unit.

• A. False
• B. True
• C. It provides color code
• D. It provides supplier info

Answer: (A)

Duct identification numbers serve as a reference that ties the duct to more than just the job and unit. In practice, these numbers are connected to additional project details such as color codes used in the field, supplier or vendor information, and other attributes like material, size, or system type. This helps ensure the right duct is fabricated, shipped, and installed in the correct location and with the correct finish or properties. So the statement is false because the ID often links to or encodes information beyond just the job and unit.