BOSS® 813 Expanding Firestop Foam

A true firestopping foam that is UL Classified and has passed the strict UL 1479 and ASTM E-814 tests. UL systems for cables, conduit and metallic pipes available. (Please consult the UL directory for a full list of approved systems.)

  • Foam only systems available
  • Up to 2 hour fire rating
  • Paintable (after inspection)

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