3M FB-249 Fire Barrier Pillow, Small, 2 in x 4 in x 9 in

3M FB-249 Fire Barrier Pillow, Small, 2 in x 4 in x 9 in

The 3M FB-249 Fire Barrier Pillow is a small-size firestop pillow measuring 2 in x 4 in x 9 in, designed to seal openings and penetrations where cables, conduit, cable trays, and other building service lines pass through fire-rated walls and floors. Sized for tighter openings and smaller cable bundles, this compact pillow is easy to position by hand and does not require mixing, curing, or special tools to install. Each case ships with 24 pillows, giving contractors and facility teams a ready supply for firestopping projects in office buildings, data centers, and industrial facilities. Backed by the 3M name, the FB-249 pillow is built to support code-driven compartmentalization strategies in commercial and industrial construction.

Key Features

• Compact Size: Measures 2 in x 4 in x 9 in, making it well suited for small openings, tight cable clusters, and hard-to-reach penetrations.
• Small Pillow Format: The FB-249 is the small-size option in the 3M Fire Barrier Pillow lineup, ideal for sealing around smaller cable runs and conduit clusters where larger pillows will not fit.
• Repositionable Design: Fire barrier pillows can be removed and reinstalled around penetrations as cables or conduit are added, removed, or rerouted, simplifying future modifications.
• Tool-Free Installation: Pillows are hand-placed into openings without mixing, curing, or special installation equipment, helping speed up firestopping work.
• Case Packaging: Sold 24 pillows per case for efficient ordering and job-site inventory management.
• 3M Reliability: Manufactured by 3M, a recognized name in passive fire protection products for commercial and industrial construction.

Technical Specifications

• Model: FB-249
• Size: Small
• Dimensions: 2 in x 4 in x 9 in
• Package Quantity: 24 per case

Typical Applications

• Firestopping Cable and Conduit Penetrations
• Sealing Openings in Fire-Rated Walls and Floors
• Data Center and Telecom Room Penetration Sealing
• Commercial and Industrial Construction Projects
• Retrofit and Renovation Penetration Sealing
• Multi-Tenant and Office Building Firestopping

Why 3M?

3M is a widely recognized manufacturer of passive fire protection products used across commercial, industrial, and institutional construction. The FB-249 Fire Barrier Pillow offers a small, repositionable, tool-free format that supports code-driven compartmentalization strategies at cable and conduit penetrations. With 24 pillows per case, contractors can stock a consistent, dependable firestop solution for ongoing projects and future modifications, backed by the 3M name.