3M™ fire barrier pillows are self-contained, intumescent products designed for use in through-penetration firestops providing up to 3 hours of protection. This fire barrier pillow expands to form a hard char that tightly seals against flame spread, smoke and toxic gases. We also engineered this product to be re-enterable and re-useable for new or retrofit installations.

3M™, 7100138834, Barrier Pillow, Large, 3 in Length, 6 in Width, 9 in Height, Fire Rating: 3 hr, Specifications Met: ASTM E 814 (UL 1479), Red, Graphite

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• Expands to form a hard char that tightly seals against flame spread, smoke and toxic gases
• Re-enterable and re-useable for new or retrofit installations
• Excellent aging properties for long-lasting durability and performance
• Tested firestop performance, tested and listed up to 3 hr in accordance with astm e814 (ul 1479) and can/ulc s115
• Easy installation and removal, no wire mesh required and easy to install, inspect, remove and reuse as needed
• Achievable smoke seal - l-rating (smoke seal) achievable when used in conjunction with 3M fire barrier moldable putty