3M™ Fire Barrier Self-Locking Pillows

3M™ Fire Barrier Self-Locking Pillows are self-contained firestops ideal for medium to large through penetrations. Pillows feature Interlocking strips – installers can easily lock multiple pillows together to achieve precise fill and compression with no additional support required. Intumescent fire-rated pillows are designed to expand during a fire, locking themselves around vital components.

Product Description

3M™ Fire Barrier Self-Locking Pillows are self-contained firestops ideal for medium to large through penetrations. They feature interlocking strips that allow installers to easily lock multiple pillows together by hand, achieving precise fill and compression without the need for additional supports or tools. Intumescent fire-rated pillows are designed to expand during a fire, locking themselves around vital components to help prevent the spread of flames, smoke, and toxic gases.

Key Benefits

  • Intumescent Expansion: Pillows are designed to expand and lock together for tight seal against flame, smoke, and toxic gases.
  • Easy Installation: Installers can easily lock multiple pillows together by hand for fast, accurate firestops.
  • Re-enterable Design: Easy to remove and reseal, allowing for future modifications or maintenance without tools.
  • Time and Labor Savings: No wire mesh, additional supports, or steel cover plates required.
  • Reliable Fire Protection: Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115.
  • Multiple Sizes Available: Allows for precise fill and compression for specific penetrations.

Best For

  • Power or communication cable penetrations
  • Gypsum wall assemblies
  • Concrete block walls and concrete floors
  • Blank openings up to 540 sq. in. (3483 sq. cm)
  • 1 or 2 cable racks or trays per penetration
  • Conduit banks and cable trays
  • Data centers and telecom applications
  • Commercial and industrial construction firestop

Product Properties

Property Specification
Application Commercial Construction
Brand 3M™
Case Quantity 20.0 Bags per Case, 24.0 Bags per Case
Fire Rating Up to 3 hr
Product Color Red
Product Form Pillow
Product Type Pillow
Smoke Seal Yes
Water-tight No
Minimum Concrete Thickness (Imperial) 2.5 in
Minimum Concrete Thickness (Metric) 63.5 mm
Overall Length (Imperial) 9 in
Overall Length (Metric) 229 mm
Overall Thickness (Imperial) 2 in, 3 in
Overall Width (Imperial) 5 in, 6 in
Overall Width (Metric) 102 mm, 152 mm