How many ounces of copper per foot of sheeting does a Type 2 hood require?

The requirement for a Type 2 hood to have 24 ounces of copper per foot of sheeting is based on industry standards for materials used in the construction of these hoods. Type 2 hoods are typically installed over equipment that produces heat and moisture, such as ovens or dishwashers, and therefore must be constructed from durable materials that can withstand these conditions.

The thickness and weight of the copper provide sufficient resistance to corrosion and damage over time, which is essential in a commercial kitchen environment. Using 24 ounces of copper per foot ensures that the hood not only meets safety codes but also performs effectively in facilitating ventilation and dealing with the byproducts of cooking.

In contrast, the other weights such as 18, 30, or 36 ounces are either under-specified or over-specified for the typical needs of a Type 2 hood, emphasizing the importance of adhering to the correct specifications that align with recognized standards in the HVAC industry.