Wall furnace vent. They had to move the furnace and didn't want to make another hole in the roof.
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What length is too long?
- Thread starter ICE
- Start date
klarenbeek
REGISTERED
If the furnace is right below the ceiling its too long of an offset. 75% of the height is usually what is allowed, in some cases you can offset up to 100% of the height but never more than that.