Master Flow 6-inch x 25-Foot Insulated Air Duct F6IFD6X300

6-Inch x 25-Foot Insulated Air Duct

• (NIFD Series)
• UL-181 Class 1 Air Duct
• Insulated flexible air duct
• Thick 1-1/4 In continuous fiberglass insulation
• Zinc coated, high carbon steel wire helix
• Continuous blanket of glass fiber insulation
• Durable UV inhibited outer jacket
• R-Value 4.2

X 25’L The Master Flow Insulated Flexible Duct R6 Silver Jacket is used in standard Heating & Air Conditioning systems and some venting applications. The duct has R6 fiberglass insulation which contains 33% 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. Duct can be cut to length as needed. Insulated duct features a maximum temperature rating of 250 degrees fahrenheit. The duct is ETL listed, meeting the UL181 standard. Always install per instructions and seal using approved mastic or sealant (or approved tape).