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Double wall chimney pipe clearance.
Class a b vent 650c metal chimney fire clearance requirements.
B vents 1 clearance.
This system is ulc s641 certified.
Carson dunlop s sketch summarizes combustible clearance requirements for the three main types of metal chimneys.
Dvl double wall stovepipe completes the venting system when used with one of duravent s chimney products such as duratech duraplus or duraplus htc.
Using a heat shield on a single wall stovepipe allows you to reduce the clearances from 18 to 6 to the wall and 9 to the ceiling.
Double wall stove pipe is used to make the connection from the chimney or chimney kit to the appliance in the final interior run.
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Sketch courtesy carson dunlop.
To 6 in the closest clearance to a wall of any connector pipe.
When combining lengths remember to subtract 1 5 from each to account for overlap.
Double walled or close clearance stove pipe is used to connect your stove to the chimney.
Dvl pipe has a double wall interior and is a close clearance stovepipe designed especially for connecting woodstoves to the chimney.
Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles.
For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls.
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Double wall pipe should not be cut.
This pipe has a clearance of only 6 to combustible materials and keeps flue gases warm for better draft.
Many think stovepipe can run from the wood stove right up through the ceiling and roof.
Double wall stove pipe can reduce the clearance needed to combustibles in many situations and typically has a stainless steel inner wall that will provide a much loger time of service that a typical single wall setup.
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Class a chimneys 2 to 2 1 2 clearance.
Double wall stove pipe on the other hand requires only 8 inches of clearance from the ceiling and 6 inches from a wall.
