// CODE SNIPPET
G2427.7.9 (503.7.9) Size of Single-Wall Metal Pipe
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- For a draft-hood-equipped appliance, in accordance with Section G2428.
- For a venting system for a single appliance with a draft hood, the areas of the connector and the pipe each shall be not less than the area of the appliance flue collar or draft hood outlet, whichever is smaller. The vent area shall be not greater than seven times the draft hood outlet area.
- Other approved engineering methods.