Last Chance 3M 7100138833 4 in. Fire Barrier Self-Locking Pillow

The 3M Fire Barrier Self-Locking Pillow with MPN 7100138833 is designed to provide effective firestopping for medium to large through penetrations. These pillows use intumescent material that expands during a fire, forming a solid barrier against flames, smoke, and toxic gases. The interlocking strips on the pillows allow for quick assembly, enabling installers to achieve precise fill and compression without needing any additional support.

• Firestop tested for up to three hours according to ASTM E 814 (UL 1479).
• Easy to install and remove without requiring wire mesh or external plates.
• Can be cut in the field, making it adaptable for various sizes and applications.

Product Highlights

3M Fire Barrier Self-Locking Pillows are suitable for sealing openings around cables and conduits in various wall types, including gypsum, concrete, and block. Their reusable design supports efficiency in both new constructions and retrofit projects.

Product Information

Standard Information

• Brand: 3M
• MPN: 7100138833

Technical Specifications

• Thickness: 2 inches
• Width: 4 inches
• Height: 9 inches
• Fire Rating: 3 hours
• Material: Graphite-free
• Specifications Met: ASTM E 814 (UL 1479), CAN/ULC-S115
• Color: Red
• Package Quantity: 24 pillows