GAF Master Flow 6 in. D Fiberglass Insulated Duct

The Master Flow 6 in. x 25 ft. Insulated Flexible Duct R8 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R8 insulation which contains 50% more insulation than the standard R4.2 product. This additional insulation provides greater thermal efficiency to save energy. The product is also covered in a heavy duty, silver jacket for durability. The duct is ETL listed, meeting the UL181 standard. R8 fiberglass insulation for greater insulating power Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting