A galvanized steel vent connector, less than 6 inches in diameter must have a minimum thickness of ______ inch, when serving a low heat appliance.

A galvanized steel vent connector, less than 6 inches in diameter must have a minimum thickness of ______ inch, when serving a low heat appliance.

• A. 0.023 inch
• B. 0.029 inch
• C. 0.034 inch
• D. 0.019 inch

Answer: (D)

For small-diameter vent connectors serving a low-heat appliance, the metal can be thinner because the heat and stress are lower and the run is shorter, so the risk of deformation or deterioration is reduced. The minimum thickness permitted here is 0.019 inch, which corresponds to a thinner galvanized steel option that still provides adequate durability for these conditions. The other thicker values are not necessary for this scenario; they are used for larger diameters or higher-heat appliances where more strength is required.

For small-diameter vent connectors serving a low-heat appliance, the metal can be thinner because the heat and stress are lower and the run is shorter, so the risk of deformation or deterioration is reduced. The minimum thickness permitted here is 0.019 inch, which corresponds to a thinner galvanized steel option that still provides adequate durability for these conditions. The other thicker values are not necessary for this scenario; they are used for larger diameters or higher-heat appliances where more strength is required.