Dri-Eaz F405 Sto&Go Ducting is collapsible semi-rigid 12″ ducting suitable for negative or positive pressure applications, and for use in cold or warm environments that range from -20 to 180 degrees F. It is made with PVC-coated polyester fabric for durability, and with spring steel wire helix to resist collapse under negative pressure. This ducting comes with a built-in bag with handle to protect it during transport and while in storage. This ducting is 25′ long and is constructed to connect to additional Sto&Go ducting segments. The internal wire on this ducting is protected with reinforcement strips for resistance to wear.