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3M 2" x 6" x 9" Self Lock Pillow

Brand: 3M Mfg#: 98040054730
Product#: 479FBPSL269
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Interlocking strips allow quick and secure pillow installation in floors or walls


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


  • Brand: 3M
  • Fire Rating: Up to 3 hr
  • Standards: ASTM E 814, UL 1479, EU RoHS Compliant
  • Type: Intumescent
  • Size: Medium
  • Length: 9 in
  • Width: 6 in
  • Height: 2 in
  • Special Features: Graphite-Free, Interlocking Strips