What is the minimum gauge of ducting allowed to pass into a garage?

The minimum gauge of ducting allowed to pass into a garage is specified as 26 gauge steel. This choice is supported by industry standards and practices that prioritize safety, structural integrity, and fire resistance.

Steel ducting is commonly used in various HVAC applications, including those in garages, where it must withstand specific conditions. The gauge of steel indicates its thickness, and a lower gauge number signifies thicker material. Thicker materials tend to be stronger and more resistant to potential impacts, which is particularly relevant in a garage setting where vehicles, tools, and other heavy items may come into contact with ductwork.

The choice of 26 gauge strikes a balance between durability and ease of installation. Thinner materials, such as 28 gauge, may not provide adequate strength and could be more susceptible to damage over time or under stress. Using ducting that is too thin could lead to leaks, decreased efficiency, and potential safety hazards. In contrast, while 20 gauge offers superior strength, it may be unnecessarily robust for typical garage applications, making 26 gauge the most appropriate compromise according to building codes and standards for this environment.