VENT · PDF fileThis may cause poor draft under certain conditions. P ... damper smoke shelf firebox chimney cap roof rafter ceiling joist drywall plaster mantel shelf throat
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VENT CONNECTORS
The chimney did not extend far enough above the roof. This may cause poor draft under certain conditions. P
roper draft requires that the chimney extend at least 3 feet above the roof and 2 feet above any portion of the