That explains the webbing. Air pressure used that same kind of innerduct with multiples inside for what ever reason( they aren't right). I say that because you will see a straight 3/4 air pipe feeding a manifold, and then see a innerduct like that.??? Our company uses this product when ducts are scarce and fiber is needed. http://www.americantechsupply.com/maxcell.htm
Re: Air Fiber??
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