Duct Size: 8" Diameter X 25' LengthMaterial: FiberglassRating: R6Flexible Duct Is Convenient For Use In Multiple Applications Including Heating And A/C Systems And Some VentingR6 Fiberglass Insulation For Greater Insulating Power With A Maximum Temperature Rating Of 200 Degrees FahrenheitDuct Can Be Cut To Length As Needed***AVAILABLE FOR LOCAL PICKUP ONLY***