2 in. x 6 in. x 9 in. FB269SL Fire Barrier Self-Locking Pillows, Medium | 3M-FB-SLP-269

3M's medium Fire Barrier Self-Locking Pillows (FB269SL) provide up to 3 hours of fire protection. During a fire, these Self-Locking Pillows intumesce (expand) and lock themselves into place, surrounding the penetrant(s) to help prevent the spread of smoke, fire and toxic gases. These easy-to-install fire barrier pillows are ideal for projects requiring re-enterability of the firestop system. Pillows can be simply removed and replaced as needed. Any combination of small, medium, or large pillows can be used to firestop an opening provided the minimum compression requirements are met (minimum of 33% within the opening).

• Firestop tested for up to 3 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