1. Product Description
3MTM Fire Barrier Pillow is a self contained, highly
intumescent firestop product for use in
through-penetration firestops.
The 3M Fire Barrier Pillows achieve up to 3 hour fire
ratings when tested by Underwriters Laboratory, Inc.
in accordance with ASTM E 814 (UL1479).
Features
•Tested to UL 910 flammability test
•Graphite free composition.
•Multiple sizes available.
•Red Color- Easy to inspect
•Easy retrofit - remove and replace pillows, as need-
ed.
2. Applications
•No wire mesh required. Consult UL Fire Resistance
Directory for specific systems.
•Gypsum Wall, Block Wall, and Concrete Floors
•Blank openings up to 540 sq. in. (3483 sq. cm).
•1 or 2 Cable Trays per penetration
•Conduit Bank and steel pipe applications
See the 3M Application and Specifiers guide for
complete details.
4. Typical Physical Properties
Blanket Color: 3M Red
Density: 6 PCF (nominal)
5. Performance
3M Fire Barrier Pillow has been tested in accordance
with ASTM E 84.
•Heat Expansion Begins: 392OF (200OC)
•Significant Expansion Begins: 536OF (280OC)
•Volume Expansion: 18% (calculated)
L Rating: See UL Listing.
Installation shall be in strict accordance with
manufacturer ’s written instructions. The product shall
be classified by Underwriter ’s Laboratory, Inc. as a
Fill, Void and Cavity Material. When installed in
accordance with systems outlined in the current UL
Fire Resistance Directory and tested in accordance
with ASTM E 814 and (UL 1479), up to a 3 hour
rating is achieved.
6. Installation Techniques
1. Install 3M Fire Barrier Pillows so the 9 in. (22,8 cm)
dimension travels through the wall, or floor.
2. One of the large faces of the 3M Fire Barrier Pillow
shall face the framing of the penetration.
3. A mixture of following pillows may be necessary to
obtain the correct compression (20% - 25%
compression).
FB 249: 2 in. x 4 in. x 9 in.
(50,8 mm x 101,6 mm x 228,6 mm)
FB 269: 2 in. x 6 in. x 9 in.
(50,8 mm x 152,4 mm x 228,6 mm)
FB 369: 3 in. x 6 in. x 9 in.
(76,2 mm x 152,4 mm x 228,6 mm)
4. Begin by installing as many FB 369 pillows, as
possible. Then install additional FB 269 and
FB 249, as needed, to complete the installation.
Storage
The 3M Fire Barrier Pillows must be stored in a dry
warehouse environment. Pallets should not be
stacked.
Methods:
1. Choose the appropriate firestop system in the 3M
Fire Protection Products Applications and
Specifiers Guide, or the UL Fire Resistance
Directory.
2. Starting in the bottom corners of the penetration,
install 3M Fire Barrier Pillows vertically so that the
large faces of the pillows are facing the framing.
See picture.
3. Fill in the space between vertical pillows with
pillows installed horizontally in rows.
4. Repeat steps 2 and 3 until the penetration is
completely full. See Figure 2.
5. If required, apply a minimum 1 in. (25,4 mm) depth
of 3M Moldable Putty+ in all four corners between
the vertical pillow and framing.
6. Check for any openings between pillows (and
penetrating items) greater than 1/16 in. (1,5 mm)
Fill any openings between 1/16 in. (1,5 mm) and
1-1/2 in. (38 mm) with a minimum 1 in. ( 25,4 mm)
depth of 3M Moldable Putty+.
Calculating Pillow Requirement:
Measure the opening, in inches, and multiply the
length by the width to get the total area. Estimate the
area occupied by the penetrating items and subtract it
from the area of the opening. This is the amount of
area to be firestopped.
For example, an opening through a gypsum wall
measures 30 in. x 18 in. (76 cm x 45 cm).
The openings area 30 in. x 18 in. (76 cm x 45 cm) is
540 sq. in. (3483 sq. cm). A 24 in. x 4 in. (60,9 cm x
10 cm) cable tray which is 40% full of cables is
running through the opening. The tray occupies an
area 0.4 in. x 24 in. x 4 in. (10,1 mm x 60,9 cm x
10 cm) of 38.4 sq. in. (247,7 sq, cm). The amount of
3. Availability
Product Unit Size Units/ Wt./
ctn. ctn.
3M Fire Barrier each 2 in.x 4 in. x 9 in. 24 12.5 lbs.
Pillow FB 249 (51 mm x 10,2 cm x 22,8 cm) 5,6 kg
3M Fire Barrier each 2 in. x 6 in. x 9 in. 32 12.5 lbs.
Pillow FB 269 (51 mm x 15,2 cm x 22,8 cm) 5,6 kg
3M Fire Barrier each 3 in. x 6 in. x 9 in. 20 15 lbs.
Pillow FB 369 (76 mm x 15,2 cm x 22,8 cm) 6,8 kg