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Class B Vent question for a water heater

Posted by Gary Rumelhart, on Tue 13 Aug 2013 11:28pm

Can I run class B vent above the ceiling tiles between the floor joists, then drop down to where the water heater is? The installation would require about 4 feet of pipe, 2 90 degree elbows and a support/fire/stop to go through the ceiling tiles.

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