3M - 3M 7100138831 3M™ Fire Barrier Self

Our 3M™ Fire Barrier Self-Locking Pillows are self-contained firestops ideal for medium to large through penetrations. Pillows feature Interlocking strips . installers can easily lock multiple pillows together to achieve precise fill and compression with no additional support required. Intumescent fire-rated pillows are designed to expand during a fire, locking themselves around vital components. Features: SELF-CONTAINED FIRESTOPS: Designed to expand during a fire, locking themselves around vital components; EASY TO INSTALL: Remove and reconfigure to help save time and labor. No wire mesh or additional support required; ASTM E 814 (UL 1479): Up to 3-hour fire ratings.; IDEAL FOR: Medium to large openings containing power or communication cables and conduits; APPLICATIONS: Conduit bank, inner duct cable and cable racks or tray applications, gypsum wall, concrete or block wall and concrete floors, blank openings up to 540 sq. ft, and 1 or 2 cable racks or trays per penetration; Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115