3M Fire Barrier Self-Locking Pillows FB369SL, Large, 3 in x 6 in x 9 in, 20/Case

• Available in multiple sizes and can be cut in the field for precise fill and compression
• Easy to install, remove and reconfigure to help save time and labor
• Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115
• Interlocking strips let installers quickly lock pillows together by hand for fast, accurate firestops
• Intumescent pillows are designed to expand and lock together for tight seal against flame, smoke and toxic gasses
• No wire mesh or additional support required

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.

Simply a Better Way to Firestop
Presenting a simpler solution to the time, cost and material challenges of firestopping medium and large through penetration openings: our 3M™ Fire Barrier Self Locking Pillows combine intumescent fire-rated material and a range of sizes with interlocking strips that allow installers to easily lock multiple pillows together without tools. Installers can also cut and reseal the pillows in the field. This makes it easier to assemble ideally-sized firestops for specific penetrations in floors and walls, installed to the correct compressions for maximum effectiveness in new construction or retrofit applications. No wire mesh, steel cover plates or other additional support is required. The pillows are fully re-enterable and reusable – the interlocking strips can be released by hand, making it easy to reconfigure firestop pillows as additional services are added or relocated.

Recommended Applications

• Firestopping medium to large openings containing power or communication cables and conduits
• Gypsum wall, concrete or block wall and concrete floors
• Blank openings up to 540 sq. in. (3483 sq. cm)
• 1 or 2 cable racks or trays per penetration
• Conduit bank, inner duct cable and cable racks or tray applications
• Can be used in conjunction with 3M Moldable Putty+

Fully Tested and Approved
These intumescent, graphite-free 3M™ Fire Barrier Self Locking Pillows are designed to expand during a fire, locking themselves into place to protect vital components and forming a tight seal against the spread of flame, smoke and toxic gasses. They are firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC-S115 when installed in listed systems.

The Science of Better Fire Protection from 3M
Since 1925 when one of our lab assistants invented masking tape, 3M has been applying science to life –developing adhesive products and technologies that help entire industries and individual businesses worldwide. The work that began with a single 3M engineer now spans decades and generations. And all of it goes into each of our adhesives, sealants, protective coatings and firestop systems like 3M™ Fire Barrier Self-Locking Pillows – to improve performance, and to help businesses like yours operate faster, better and more efficiently.

Trusted 3M Fire Barrier

The 3M Fire Barrier Self-Locking Pillows FB369SL offer reliable fire protection with a proven design. This large model features interlocking strips that make installation straightforward and secure. The brand's reputation ensures quality and safety in firestop solutions.

These pillows are ideal for medium to large through penetrations, providing a dependable firestop system. The FB369SL model is designed to lock tightly, helping to prevent the spread of flame and smoke during a fire event.

Precise Large Size Dimensions

Each pillow measures 3 inches by 6 inches by 9 inches, offering a substantial size for effective firestopping. This large dimension allows for filling bigger openings with ease and accuracy, reducing gaps and improving safety.

The size is perfect for a variety of applications, including concrete floors and gypsum walls. Its dimensions help installers achieve the right compression and fill for optimal fire protection in critical areas.

Easy Self-Locking Format

The self-locking format of the FB369SL model simplifies installation by allowing pillows to lock together by hand. This feature eliminates the need for tools or additional support, speeding up the firestop process.

Installers can also cut and reconfigure the pillows on site, making them adaptable to specific penetration sizes. This flexibility reduces labor time and material waste during construction or retrofit projects.

Effective Firestop Pack

Each case contains 20 large pillows, providing enough material for multiple firestop applications. This pack size supports efficient project planning and ensures consistent supply for medium to large penetrations.

The 20-count case is convenient for contractors managing several openings, allowing them to maintain productivity without frequent reordering. It also helps maintain uniform fire protection standards across a job site.

Reliable Fire Protection Performance

The FB369SL pillows are firestop tested for up to 3 hours under ASTM E 814 (UL 1479) and CAN/ULC-S115 standards. This rigorous testing confirms their ability to resist flame, smoke, and toxic gases effectively.

Designed to expand and lock tightly during a fire, these intumescent pillows provide a secure seal around cables and conduits. Their graphite-free composition enhances safety and environmental compliance.