3M™ Fire Barrier Duct Wrap 615+

Thin, lightweight and flexible, 3M™ Fire Barrier Duct Wrap 615+ provides excellent insulating capabilities and offers a space-saving alternative to traditional bulky fire protection methods obtained through a gypsum wall shaft or enclosure. This wrap is commonly used in commercial kitchen grease ducts, as well as ventilation ducts.

Product Description

3M™ Interam™ Endothermic Mat E‑54C (B40067437) is a space-efficient, flexible fire protection wrap supplied in 24.5″ × 20′ rolls. When exposed to intense heat, it absorbs heat via moisture release, effectively slowing fire progression around structural steel, conduits, cable trays, and membrane penetrations.

Key Benefits

  • Multi-Hazard Fire Protection: Up to 4 hr structural steel, 3 hr electrical circuit performance per ASTM E119/E1725.
  • Resistant to Extreme Fires: Rated for hydrocarbon pool fire and jet fire exposures in accordance with UL 1709 and ISO 22899.
  • Flexible & Reinstallable: Wraps around irregular shapes, re-wrappable, and with no maintenance necessary.
  • Low-Maintenance & Non-Corrosive: Inorganic composition backed by stainless or aluminum foil—repairable and inspection-friendly.
  • Compact & Lightweight: Roll format simplifies storage and onsite handling—no mixing or fixatives required.

Best For

  • Structural steel fireproofing
  • Cable trays and conduit protection
  • Electrical circuits and junction boxes
  • Membrane and wall penetration sealing
  • Industrial & commercial fire applications
  • Hydrocarbon and jet fire scenarios

Product Properties

Property Specification
Dimensions 24.5″ (622 mm) wide × 20 ft (6.09 m) per roll
Fire Ratings 4 hr structural (ASTM E119), 3 hr electrical (ASTM E1725)
Fire Scenarios Hydrocarbon (UL 1709), Jet (ISO 22899), Cellulosic (ASTM E119)
Backing Stainless steel or aluminum—inorganic & non-corrosive
Packaging 1 roll per case (B40067437)
Properties Flexible, cuttable, re-wrappable, inspection-friendly