At maximum, how far apart should straps be placed when supporting ducts?

The correct spacing for straps when supporting ducts is 64 inches. This requirement is crucial for ensuring that the ducts remain securely fastened and properly supported throughout their length. Straps that are too far apart can lead to sagging, misalignment, or even damage to the ductwork, compromising both its effectiveness and safety.

The specification of 64 inches allows for adequate support while preventing excessive movement or stress on the ducts. This requirement is based on codes and standards that prioritize the integrity of the duct system, contributing to efficient airflow and system longevity. Adhering to this spacing helps maintain the ductwork's structural support and ensures compliance with building and mechanical codes.