Any thoughts on using this for the entire job down in my crawl space? I already have it on three runs off the old ductwork I'm removing. The flex part is only a few years old, so I plan to keep it where it is. It'd sure make my job easier, I would think. Anyone know of any on-line tutorials? EZ-install sites or similar?
Thanks guys! I googled it, but didn't find much.
(Searched here too, of course, same thing.)
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Flex can be used for both a trunk line, and for supply branches.
Some areas interpret the code on flexible duct connectors to include flex duct. It doesn't. but those areas won't let you use it for a trunk line.
Flex duct needs to be installed using a flew duct FR chart. Not the standard FR chart for sheet metal.
6" sheet metal pipe at .08" FR will flow 100CFM.
6" Flex duct at .08" FR will flow 75CFM.
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17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?