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Our pillows intumesces (expands) and locks itself into place, completely surrounding the penetrant(s) stopping smoke, fire and toxic gases from spreading to the next room or next floor for the rated time period. They are easy to install and great for retrofit project.
3M Self-Locking Fire Barrier Pillows 3M Standard Fire Barrier Pillows
Interlocking strips allow quick and secure pillow installation in floors or walls.
Self-contained, intumescent product for use in a wide variety of through-penetration firestops including cable trays, conduit and blank openings.