3M 7100138834 Large Barrier Pillow, 3 in L x 6 in W, 3 hr Fire Rating, Graphite, ASTM E 814 (UL 1479)

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

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.