3M 7100016178 Fire Barrier Pillow 2x6x9 Firestop

Product Description

The 3M 7100016178 is a medium intumescent fire barrier pillow designed for through-penetration firestop applications in commercial and industrial construction. Measuring 2 inches x 6 inches x 9 inches, this self-contained pillow provides up to 3 hours of fire protection. During a fire event, the intumescent fill material expands and locks into place around penetrants, creating a seal that helps block the spread of smoke, fire, and toxic gases. Each pillow weighs approximately 0.78 pounds. Installation requires no special adhesives or mixing, making it a practical choice for firestop assemblies that need to remain re-enterable over the life of the installation.

This pillow is used in through-penetration firestop assemblies where cables, cable trays, conduit runs, or blank openings pass through fire-rated walls and floors. It is well-suited for projects where future access to the penetration is required, since the pillows can be removed and replaced without demolishing the assembly. Any combination of small, medium, or large 3M Fire Barrier Pillows may be used together within a single opening, provided minimum compression requirements are met — specifically, a minimum of 33 percent compression within the opening. Licensed firestop contractors, electricians, and mechanical contractors commonly install this product during new construction and renovation work on fire-rated assemblies.

Key Features

• Provides up to 3 hours of fire protection in listed through-penetration firestop assemblies
• Intumescent fill expands during heat exposure, sealing around cables, conduit, and other penetrants
• Re-enterable design allows pillows to be removed and replaced without damaging the firestop system
• Compatible with mixed pillow sizing — small, medium, and large pillows can be combined in a single opening
• Self-contained construction requires no mixing, caulking, or adhesives for installation
• Suitable for cable trays, conduit penetrations, and blank openings in fire-rated walls and floors

Compatibility

Designed for use in through-penetration firestop applications involving cable trays, conduit, and blank openings in fire-rated wall and floor assemblies. Can be used in combination with small or large 3M Fire Barrier Pillows within the same opening, provided the 33 percent minimum compression requirement is satisfied.

Installation Notes

Installation should be performed by a qualified firestop contractor, licensed electrician, or mechanical contractor familiar with applicable fire codes and listed firestop system requirements. De-energize all circuits passing through the penetration before beginning work, and follow the specific UL-listed or FM-approved system details for the assembly being firestopped. Pillows must achieve a minimum of 33 percent compression within the opening — verify this during placement. Local building and fire codes, including IBC firestop provisions, govern inspection and documentation requirements for completed assemblies.

Technical Specifications

• Dimensions: 2 inches x 6 inches x 9 inches
• Weight: 0.78 pounds
• Fire Protection Rating: Up to 3 hours
• Minimum Compression Requirement: 33 percent within the opening
• Size Classification: Medium
• UPC: 00051115165313

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100016178