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4" x 2' x 4' Thermafiber Safing

Mfg#: 42448
Product#: 336TAF42448
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THERMAFIBER Safi ng products are designed to provide life saving fi re protection in perimeter fi re containment systems floor and wall penetrations, construction joints, and other fi restopping applications. These products are noncombustible, moisture-resistant, noncorrosive, nondeteriorating, mildew-proof and vermin-proof. Thermafi ber Safi ng provides thermal insulation, fi re protection, and acoustical control in many different UL and Intertek (formerly OPL) listed fi re containment assemblies of 1, 2, and 3-hr ratings


  • Controls noise and sound
  • Provides life saving fi re protection in rated assemblies
  • Conserves energy, reduces greenhouse gas and carbon emissions
  • Resists moisture
  • Easy to fabricate for through penetrations and fi restopping
  • Exceptional performance in perimeter fire containment systems


  • Standards: UL Listed, ASTM Specified
  • Thickness: 4
  • Length: 4 ft
  • Width: 24 in