3M Fire Barrier duct wrap 615+ | GLT Products

3M™ Fire Barrier Duct Wrap 615+

3M™ Fire Barrier Duct Wrap 615+ is now available in a lighter weigh 6pcf density. Additionallly, it is certified according to ASTM E2336 (grease duct test standard) in two layer systems and ISO 6944 (air duct test standard) in single layer systems. The product is certified with both UL and Intertek (OPL) and has 1 and 2 hour design listings. 3M Fire Barrier Duct Wrap 615+ allows for a low thermal transfer in a lightweight, low profile and is easy to use and install. The only fire rated duct wrap you need for code required protection of grease and air ducts.


  • Lightweight (6lbs per cu ft) and thin (1.5" *) for easier application
  • 2 hour fire protection
  • Third party certified to ASTM E2336 (grease ducts test standard) and ISO 6944 (air duct test standard)
  • Supports maximum temperatures of up to 2192°F (1200°C)
  • Apply in 2 layers for grease ducts
  • Apply in 1 layer for air ducts

* In accordance with the tolerances in ASTM C 892 Standard.


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