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3M™ Fire Barrier Self-Locking Pillows

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  • Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479)
  • Intumesces to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases
  • No wire mesh required
  • Graphite-free, does not conduct electricity
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  • Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479)
  • Intumesces to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases
  • No wire mesh required
  • Graphite-free, does not conduct electricity
  • Interlocking strips quickly lock pillows together
  • UL classified (meets code requirements)
  • Re-enterable and re-useable for new or retrofit installations
  • Available in three sizes (use a combination of sizes to fit a variety of openings)
  • Easy to install and easy to remove (helps save time and labor)

Interlocking strips allow quick and secure pillow installation in floors or walls.

Pillows remove easily when adding new services. Self-contained, intumescent product for use in a wide variety of through-penetration firestops including cable trays, conduit and blank openings. Provides up to 3-hour fire protection. Small self-locking pillow: 2” x 4” x 9” (50.8 mm x 101.6 mm x 241.3 mm). During a fire, 3M™ Fire Barrier Self-Locking Pillows intumesce (expand) and lock themselves into place, surrounding the penetrant(s) to help prevent the spread of smoke, fire and toxic gases. Easy-to-install 3M™ Fire Barrier Pillows are ideal for projects requiring re-enterability of the firestop system. Simply remove and replace pillows as needed. Any combination of small, medium, or large pillows can be used to firestop an opening provided the minimum compression requirements are met (minimum of 33% within the opening).

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