3M - 3M FB-249 Fire Barrier Pillow, Small, 2" x 4" x 9"

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. Features: TESTED FIRESTOP PERFORMANCE: Tested and listed up to 3-hours in accordance with ASTM E814 (UL 1479) and CAN/ULC S115; SELF-CONTAINED FIRESTOP: Self-contained, graphite free highly-intumescent products designed to firestop a wide variety of through-penetrations including cable trays, conduit and blank openings; ACHIEVABLE SMOKE SEAL: L-Rating (smoke seal) achievable when used in conjunction with 3M™ Fire Barrier Moldable Putty; EASY RETROFIT: remove and reuse pillows as needed; EASY INSTALLATION AND REMOVAL: No wire mesh required and easy to install, inspect, remove and reuse as needed; EXCELLENT AGING PROPERTIES: Long-lasting durability and performance