Firestop tested for up to 4 hours in accordance with ASTM E 814 (UL 1479)
Intumesces (expands with heat) to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases
Thermally conductive: allows unwanted heat build-up to escape
UL classified (meets code requirements)
Re-enterable for new or retrofit installations
Easy to install using common trade tools
Cut and form to desired shape
A UL-Classified firestop used to seal cable trays, cable, piping and other items that penetrate through fire-rated walls and floors. The product firestops large blanks and provides a smoke seal (when used in conjunction with 3M™ Fire Barrier Sealant or Moldable Putty MP+) for any shape opening in concrete block or slabs. Use 3M™ Fire Barrier Composite Sheet CS-195+ to shield cable trays, conduit, HVAC ductwork, panels, valves and vital heat-sensitive process equipment. The product is effective in protecting cable drop-outs, junction boxes and cabinets, as well as in providing an intermittent firestop in horizontal and vertical cable tray runs.