The Master Flow 4 in. x 12 ft. Insulated Flexible Duct R6 Silver Jacket is used in standard Heating and Air Conditioning (HVAC) systems and some venting applications. The duct has R6 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. It can be used for venting bath fans where insulation is required. The duct is ETL listed, meeting the UL181 standard.

  • R6 fiberglass insulation for greater insulating power
  • Flexible duct is convenient for use in multiple applications including heating and A/C systems and some venting
  • Oversized core to connect quickly and easily to standard sheet metal fitting
  • Galvanized core wire for greater corrosion resistance vs non-galvanized wire
  • Duct can be cut to length as needed
  • Insulated duct features a maximum temperature rating of 200°F
  • Always install per instructions and seal using approved mastic or sealant (or approved tape)

Condition:
Item is New, Item will come in the original packaging with all parts/pieces/manuals specific to this model included with no cosmetic damage to the item. 

Shipping Policy:
We ship all items within 1 business day after the order is placed and payment received.
We shop for the fastest delivery times/rates using FEDEX, UPS, and USPS,

We commonly ship Priority Mail or UPS Ground. 

Item will be shipped in original box. 

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Returns are not accepted. Sale is final. Please contact us prior to purchasing if you have any questions. We are happy to assist you!

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