3M™ Fire Barrier Self - Locking Pillow

Self-contained, highly-intumescent pillows designed to firestop a wide variety of through penetrations including cable trays, conduit and blank openings. Interlocking strips hold pillows securely together yet release easily for retrofit or reuse — just remove and reinstall pillows as needed.

  • Up to 3-hour fire ratings per ASTM E 814 (UL 1479)
  • UL listed systems with openings up to 1,080 sq. in.
  • No wire mesh reduces safety issues
  • Easy to install, easy to remove and reuse
  • Lock pillows together, compress and place (use 3M™ Fire Barrier Moldable Putty+ in voids to ensure proper seal)
  • No graphite
  • Excellent aging properties
  • Pillows can be field-cut when needed
  • Available sizes: 2 in. x 4 in. x 9 in. (small), 2 in. x 6 in. x 9 in. (medium) and 3 in. x 6 in. x 9 in. (large)
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