• Home
  • 3M 3' x 3' Fire Barrier Composite Sheet
Image for 3M 3' x 3' Fire Barrier Composite Sheet from White Cap
+ / - Hover over image to Zoom
Other Views

3M 3' x 3' Fire Barrier Composite Sheet

Brand: 3M Mfg#: 98040024089
Product#: 479CS19536
Based on Product Sourcing
Hazardous material shipping restrictions apply. You may be contacted by Customer Service if an alternate shipping method is required.

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


A thin one-part composite system designed to firestop blank openings and larger penetrations such as cable trays and conduit and HVAC ductwork through rated construction


  • Easy to install using common trade tools
  • Thermally conductive allows unwanted heat build up to escape
  • Non-flame supporting
  • Firestop tested for up to 4 hr in accordance with ASTM E 814 (UL 1479)
  • Re-enterable for new or retrofit installations
  • Intumesces (expands with heat) to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases
  • Cut and form to desired shape


  • Brand: 3M
  • Fire Rating: 4 hr
  • Mounting: Wall/Floor
  • Material: Steel
  • Standards: UL Listed, FM Approved
  • Length: 36 ft
  • Width: 36 in
  • Special Features: 0.3 in Thickness, Cover with Aluminum Foil
  • Usage: For Shield Cable Trays and Conduit, HVAC Ductwork and Vital Process Equipment