3M 7100138831 Fire Barrier Self-locking Firestop Pillow

Product Description

The 3M 7100138831 is a large self-locking intumescent firestop pillow measuring 3 inches x 6 inches x 9 inches, designed for use in through-penetration firestop assemblies in floor and wall openings. During a fire event, the intumescent fill expands and locks the pillow in place, sealing around penetrants to resist the spread of fire, smoke, and toxic gases for up to 3 hours. The self-contained design requires no special tools or adhesives for installation. This product is sold individually and is installed by fire protection contractors, electricians, and plumbers working on penetration firestop systems in commercial and residential construction.

This firestop pillow is suited for a wide variety of through-penetration applications including cable trays, conduit runs, and blank openings in rated floor and wall assemblies. Its re-enterable design makes it well-suited for active construction environments where new services are added over time. Any combination of small, medium, or large pillows from the same product family can be used together in a single opening, provided the minimum 33 percent compression within the opening is achieved.

Key Features

• Interlocking strips allow quick and secure installation in floor or wall openings without adhesives
• Intumescent fill expands during fire exposure to seal around penetrants and block smoke, fire, and toxic gases
• Provides up to 3-hour fire protection in through-penetration firestop assemblies
• Re-enterable system — pillows remove and replace easily when adding or modifying services
• Compatible with cable trays, conduit, and blank openings
• Mix-and-match sizing: small, medium, and large pillows can be combined in a single opening when minimum compression requirements are met

Compatibility

Designed for use in through-penetration firestop assemblies involving cable trays, conduit, and blank openings in rated floor and wall constructions. Minimum 33 percent compression within the opening is required for proper performance.

Installation Notes

Installation is typically performed by licensed electricians, plumbers, or fire stop specialty contractors as part of a code-required penetration firestop system. Verify that the opening and penetrant configuration matches the listing requirements for the firestop assembly before installing. Ensure minimum 33 percent pillow compression within the opening is achieved for the system to perform as rated. Consult applicable building codes and fire-resistive assembly listings prior to installation.

Technical Specifications

• Dimensions: 3 inches x 6 inches x 9 inches
• Weight: 0.79 pounds
• Fire Protection Rating: Up to 3 hours
• Minimum Compression Requirement: 33 percent within opening
• Unit of Measure: Each
• UPC: 00051115165801

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138831