What is the minimum gauge steel required for ducts penetrating walls or ceilings between a dwelling and a garage?

The minimum gauge steel required for ducts penetrating walls or ceilings between a dwelling and a garage is determined to ensure safety and structural integrity. In this context, No. 26 gauge steel is specifically chosen because it provides a good balance of strength and fire resistance, which is critical in situations where the ductwork is exposed to potential hazards such as flames or high temperatures, particularly from vehicles or other sources within a garage.

Ducts located between a garage and a living space need to be constructed to prevent any fire from spreading from the garage to the home. The No. 26 gauge steel is adequately thick to withstand these conditions and complies with building codes that address fire prevention and safety in residential constructions.

This gauge choice reflects the industry standards that dictate the materials and construction practices necessary to promote safety in the event of a fire. Therefore, using No. 26 gauge steel is a requirement in such scenarios to ensure proper safety measures are in place.