615 Plus Duct Wrap 3M™ Fire Barrier

Minimizes Damage to Your Facility in the Event of a Fire


What's special about this fire barrier duct wrap?

  • Protects grease and air ducts from temperatures of up to 2,192°F (1,200°C) for up to 2 hours.
  • Lightweight, flexible construction lets you easily install around sharp corners and obstacles.
  • Low 1.5 inch thick profile and zero clearance requirement allows you to install in some of the most congested areas for maximum versatility.
  • Ideal for providing reliable fire protection for ducts in restaurant kitchen exhausts, exit corridors and elevator smoke vents.
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  • UL rated, ULC rated

A fire will always cause a certain amount of damage, but this can be minimized by using 3M fire wrap. Fire Barrier 615+ Duct Wrap by 3M™ guards your ducts from fires for up to 2 hours, preventing flames from destroying ducts. This fire barrier duct wrap also prevents smoke from travelling to other areas in your facility where it can hurt personnel and destroy equipment.

Please Note: These products ship in 5-7 days

Part # Description Dimensions Weight Price
3M-DW61524P Fire Barrier 615+ Regular 1.5 "H x 24" W x 25' L
(3.81 x 60.95cm x 7.62 m)
49.7 lbs (22.54 kg)
3M-DW61548P Fire Barrier 615+ Extra Wide 1.5" H x 48" W x 25' L
(3.81 x 121.9 cm x 7.62 m)
90 lbs (40.82 kg)
  • Available in 24 and 48 inch wide rolls for varying application sizes.
  • Saves time and money over expensive difficult to install fire-rated duct enclosures.
  • All industry standards are printed on the material for easy identification during inspections.
  • Meets all pertinent codes and industry standards to accommodate any application.
  • SPECS -

  • 3M™ FB Duct Wrap 615+ Technical Data Sheet (PDF) PDF
  • Architectural Specifications (PDF) PDF
  • Material Safety Data Sheet (PDF) PDF

    Maximum Temperature 2192°F (1200°C) 
    Blanket Color White
    Scrim Color Aluminum with Black Text
    Blanket Weight 0.9 lbs/ft.2 (4.38 kg/m2)
    Surface Burning Characteristics
    • Type: Foil Encapsulated Blanket
    • Flame Spread: 0
    • Smoke Development: 0
    Shelf Life Indefinite when stored unopened in a dry warehouse environment
    • Air Ducts: Apply 1 Layer
    • Grease Ducts: 2 Layers
    Industry Standards
    • ICC-ES AC101
    • ASTM E 2336
    • ASTM E 119
    • ASTM E 814
    • ASTM E 84
    • ASTM E 136
    • ASTM C 518
    • ISO 6944-85


    Physical Properties

    Thermal Conductivity Btu - in. / hr - ft2 -°F W /m2 - K
    500°F (260°C) 0.6 0.09
    1000°F (537°C) 1.15 0.17
    1500°F (815°C) 1.93 0.28
    1800°F (982°C) 2.51 0.36
    2000°F (1093°C) 2.94 0.43


    Single layer R-Value 6.38°F - ft - hr Btu

    Linear Shrinkage (24 Hr@ 2012°F (1000°C)): 1.2%


    Design Listings

    Grease Duct Listings – ASTM E 2336 / ICC-ES AC101

    Fire Resistive Rating Enclosure System Third-Party Testing Services Design Listing Description
    1- and 2-hour 2 layers of 3M Fire Barrier Duct Wrap 615+ ICC-ES ESR-1255
    Intertek 3MU/FRD 120-18
    Intertek 3MU/FRD 120-19


    Ventilation Duct Listings – ISO 6944

    Fire Resistive Rating Enclosure System Third-Party Testing Services Design Listing Description
    1- and 2-hour 1 layer of 3M Fire Barrier Duct Wrap 615+ Interek 3MU/DI 60-01
    Underwriters Laboratories HNLJ V-27
    Interek 3MU/DI 120-01
    Rectangular/Round (1 Hour)
    Rectangular (2 Hour)
    Rectangular/Round (2 Hour)


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    Questions & Answers


    can 3M fire wrap be painted (after inspections)?

    Asked by mark m. on 12.22 PM Wednesday, 13 August, 2014

    • - Thank you for your question. While it can be done, this is not recommended as the fire wrap will lose some of its protective properties.

      Fernando M. on 09.13 AM Tuesday, 19 August, 2014

    Can I use this duct fire wrap for wrapping a Cable Tray, an open or semi-enclosed cable tray that is fully or partially filled with cables?

    Asked by Anonymous user on 10.55 AM Thursday, 12 January, 2017

    • - Yes, This Duct can be use for fire protection inside of a Cable Tray

      Taj S. on 08.51 AM Tuesday, 21 February, 2017

    Could you tell me the total thickness for this wrap? I am wrapping underfloor duct work for a dust collector exhaust system. Could you please tell me if there exist a product that does not have to be 3" thick?

    Asked by Anonymous user on 01.53 PM Thursday, 30 March, 2017

    • - Hello, This wrap is 1.5" thick and has a zero clearance requirement. I hope this helps

      andrew b. on 03.16 PM Thursday, 06 April, 2017

    Can I use this to wrap commercial dryer ducts to keep heat IN the duct as opposed to the stated purpose of the product (keeping heat out)?

    Asked by Anonymous user on 01.06 PM Friday, 14 July, 2017

    • - Hello, This product is not certified for keeping heat in, but is capable of helping the ducts with it.

      Anonymous user on 11.44 AM Tuesday, 01 August, 2017

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