Flexible ducting distributes air throughout your home. The ducting comes in a variety of diameters to suit your needs, and is connected to your furnace or air handler, then to any area of the home you want the air to go. Its insulated design means you won't lose heating or cooling out of the ducting when the ducting is in an unconditioned area, such as an attic or crawl-space. The flexible movement of it means you can install it quickly and easily. Our flexible ducting is available in two different insulation values, R-4.2 which is basic, or R-8.0 which has the highest energy saving properties. R-8.0 is required by code in some municipalities when using flexible ducting. Studies have shown that heating and cooling systems can lose up to 30% of their efficiency due to leaks in the duct work. See more details about sealing duct work in this helpful article about duct leakage.