• Home
  • 3M 3" x 6" x 9" Self Lock Pillow
Image for 3M 3
+ / - Hover over image to Zoom
Other Views

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

Brand: 3M Mfg#: 98040054748
Product#: 479FBPSL369
Based on Product Sourcing

Please Login to receive Special Pricing
Not Registered? Create an Account


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


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


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