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3M 3" x 6" x 9" Fire Barrier Pillow

Brand: 3M Mfg#: 98040054235
Product#: 479FBP369
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Self-contained, intumescent product for use in a wide variety of through-penetration firestops including cable trays, conduit and blank openings


  • Available in three sizes (use a combination of sizes to fit a variety of openings)
  • No wire mesh required
  • Re-enterable and re useable for new or retrofit installations
  • Firestop tested for up to 3 hr in accordance with ASTM E 814 (UL 1479)
  • Graphite free, does not conduct electricity
  • Easy to install
  • Intumesces to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases


  • Brand: 3M
  • Standards: ASTM E 814, UL 1479, EU RoHS Compliant
  • Size: Large
  • Fire Rating: Up to 3 hr
  • Length: 9 in
  • Width: 6 in
  • Height: 3 in
  • Special Features: Graphite-Free
  • Usage: For Firestop Wide Variety of Through Penetration Firestop Including Cable Trays, Conduit and Blank Openings