Product Description
3M™ Interam™ Endothermic Mat E‑5A‑4 is a flexible, heat‑absorbing wrap (24.5″ × 20′ roll) designed to protect structural steel, electrical circuits, cable trays, and wall membrane penetrations by cooling surfaces through release of chemically‑bound water during intense heat exposure.
Key Benefits
- High Fire Resistance: Rated for 4 hr protection on structural steel (ASTM E119) and 3 hr on electrical systems (ASTM E1725).
- Hydrocarbon Fire Tested: Effective in large hydrocarbon pool fires per ASTM E1529 / UL 1709.
- Cool-to-the-Touch: Releases cooling water to absorb heat under extreme fire conditions.
- Flexible & User-Friendly: Roll format allows cutting, wrapping, inspection, and re-wrapping without tools or adhesives.
- Low Maintenance: Inorganic fibers and available stainless/aluminum backing—non-corrosive and maintenance-free once installed.
Best For
- Structural steel fire wrapping
- Cable tray and conduit protection
- Electrical circuit fire barrier
- Wall membrane and junction box insulation
- Hydrocarbon fire zones
- New or retrofit fire protection projects
Product Properties
| Property | Specification |
|---|---|
| Roll Size | 24.5″ (622 mm) × 20′ (6.09 m), 1 roll/box |
| Fire Ratings | 4 hr (ASTM E119), 3 hr (ASTM E1725) |
| Tested Fire Scenarios | Cellulosic, Hydrocarbon (UL 1709), Large Pool Fire (ASTM E1529) |
| Cooling Mechanism | Chemically‑bound water release for surface cooling |
| Format | Flexible roll; cuttable, re‑wrappable, inspection‑friendly |
| Backing Options | Available with stainless steel or aluminum lamination |
| Maintenance | Non‑corrosive; maintenance‑free once installed |
