3M™ Fire Barrier Self-Locking Pillows

3M ID B40070036

Firestop tested for up to three hours in accordance with ASTM E 814 (UL 1479)

Intumesces to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases

No wire mesh required

Overall Width (Metric)	152 mm, 102 mm
Overall Width (Imperial)	6 in, 4 in
Overall Thickness (Imperial)	2 in, 3 in
Product Type	Pillow
Overall Length (Metric)	229 mm
Overall Length (Imperial)	9 in

Specifications

Details

Highlights

Firestop tested for up to three hours in accordance with ASTM E 814 (UL 1479)
Intumesces to form a hard char that tightly seals penetrations against flame spread, smoke and toxic gases
No wire mesh required
Graphite-free, does not conduct electricity
Interlocking strips quickly lock pillows together
UL classified (meets code requirements)
Re-enterable and re-useable for new or retrofit installations
Available in three sizes (use a combination of sizes to fit a variety of openings)
Easy to install and easy to remove (helps save time and labour)

3M™ Fire Barrier Self-Locking Pillow FB249SL is a self-contained, intumescent product that features interlocking strips that allow quick and secure pillow installation in floors or walls.

Suggested applications

3M™ Fire Barrier Self-Locking Pillows act as a through penetration firestop, heat shield and firebreak protection material
Ideal for fire stopping medium to large openings with power or communication cables, conduits and cable racks or trays (up to two racks or trays per opening, no additional support required, consult the applicable third-party test agency directory for specific systems)
Typically used to firestop gypsum wall, block wall and concrete floor assemblies