3M™Interam™ Endothermic Mat E-54C, 24.5 in x 20 ft, 1 Roll/Case

3M™ Interam™ Endothermic Mat E-54-C is an easy-to-install heat-absorbing wrap system that provides excellent fire resistance for structural steel components and critical electrical circuitry. When exposed to intense heat, the mat releases chemically-bound water to cool its outer surfaces. Installers can easily cut the material to fit even complex installations.

Product Description

3M™ Interam™ Endothermic Mat E‑54C is a flexible, heat-absorbing wrap supplied in 24.5″ × 20′ rolls. Its endothermic material releases chemically bound water under intense heat, cooling surfaces and delaying fire progression around structural steel, electrical circuits, conduit, cable trays, and wall membranes.

Key Benefits

  • High-Level Fire Resistance: Provides 4 hr structural steel protection (ASTM E119) and 3 hr electrical circuit continuity (ASTM E1725).
  • Hydrocarbon & Jet Fire Tested: Withstands hydrocarbon pool fires (ASTM E1529/UL 1709) and jet fires (ISO/EN standards).
  • Flexible & Easy to Install: Roll form allows cutting, wrapping, inspection access, and re-wrapping without tools, mixing, or adhesives.
  • Non-Corrosive & Maintenance-Free: Made with inorganic fibers and available with stainless steel scrim; no ongoing maintenance required.

Best For

  • Fireproofing structural steel in walls and ceilings
  • Protecting cable trays, electrical circuits, and conduits
  • Wrapping around membrane & wall penetrations
  • Hydrocarbon or jet fire risk zones
  • New builds and retrofit fire protection
  • Inspections—unwrap and re-wrap ability

Product Properties

Property Specification
Roll Size 24.5″ (622 mm) × 20′ (6.09 m)
Fire Ratings 4 hr (ASTM E119); 3 hr for electrical (ASTM E1725)
Fire Type Cellulosic, hydrocarbon, jet fires
Backing Options Available with stainless steel scrim
Installation Cut-and-wrap, rewrappable without tools or adhesives
Material Inorganic endothermic fiber mat
Maintenance Non-corrosive; no maintenance when installed