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:

• Intumescent pillows are designed to expand and lock together for tight seal against flame, smoke and toxic gasses
• Easy to install, remove and reconfigure to help save time and labor
• Interlocking strips let installers quickly lock pillows together by hand for fast, accurate firestops
• Available in multiple sizes and can be cut in the field for precise fill and compression
• No wire mesh or additional support required