Product Description
3M™ Fire Barrier Plank PK39 delivers flexible, re-enterable fire protection for cable tray and multi-penetration applications in walls and floors. It combines intumescent and non-intumescent materials to help stop the spread of fire, smoke, and toxic gases.
Key Benefits
- Flexible Design: Easily cut and fitted around complex cable tray and conduit layouts.
- Re-Enterable: Allows easy access for future maintenance, cable additions, or modifications.
- Effective Fire & Smoke Protection: Stops the passage of fire, smoke, and toxic gases through wall and floor assemblies.
- Minimal Dust or Mess: Clean installation compared to traditional mortar or pillow systems.
Best For
- Cable tray penetrations
- Multi-cable floor or wall penetrations
- Re-enterable penetrations with future cable changes
- Electrical and communication cable protection
- Large bundled cable runs
- Rated wall and floor assemblies
Product Properties
| Property | Specification |
|---|---|
| Product Type | Fire Protection Plank |
| SKU | B5005459011 |
| Re-Entry | Yes — fully re-enterable |
| Primary Use | Cable tray and multi-penetration protection |
| Fire Rating | Tested to ASTM E814 / UL 1479 |




