Its high speed low drag R-8 (the highest rating you can get at this time) insulated flexible duct work, what is there to say other than once its installed (if its installed correctly) it will work perfectly but never be see hidden up in the attic.
Verified purchase: Yes | Condition: Pre-owned
Fair price tho it went on sale after we purchased 2 of them!
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
Bought it for hooking up my outside wood stove it my oil burner. It flexes nice and fits on a 6" stove pipe nicely.
Verified purchase: Yes | Condition: New
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