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3M™ Fire Barrier Block B258, 2.36 in x 5.12 in x 8 in, 12 per case

SKU: 7010305974

3M™ Fire Barrier Block B258, 2.36 in x 5.12 in x 8 in, 12 per case

SKU: 7010305974
$36.26 / Each
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Minimum Order Quantity: 12 Each
QTY:
SHIPPING DIMENSIONS Height: 8.82 Inches Width: 10.24 Inches Length: 16.54 Inches Weight: 14 Lb(s) 12 Oz

Product Benefits

  • Pre-formed foam block maintains tight firestop seal to prevent fire, smoke and toxic gas transmission
  • Fits medium to large openings in wall and floor through-penetrations
  • No cure time means faster completion
  • Block is paintable with primer
  • Installation requires no special tools
  • Can be repaired and reused as needed, saving time and labor
  • Firestop tested in accordance with ASTM E 814/UL 1479
  • Can be sealed with 3M™ Fire Barrier Rated Foam FIP 1-Step and other 3M™ fire barrier sealants (sold separately)

More Product Details

3M™ Fire Barrier Block B258
Blocks are fully re-enterable and reusable

A Better Way to Fill Large Gaps
When sealing larger cavities, use 3M™ Fire Barrier Block B258 (PDF, 78 Kb) to restore the integrity of the wall with a simple "stack, seal, and done" application, without the use of special tools. The blocks are engineered to remain securely in place, eliminating traditional wire mesh reinforcements. Pre-formed blocks help technicians fill large openings quickly (PDF, 252 Kb). The material is easy to trim on site without special tools, achieving a tight, custom fit. No cure time is required, which means installation is completed faster, and the blocks are paintable with primer for a more seamless appearance.

The blocks are fully re-enterable and reusable, saving time and money, while minimizing waste. Once the opening is filled, seal around the perimeter and any penetrating items with 3M™ Fire Barrier Rated Foam FIP 1-Step or other 3M™ fire barrier sealants (sold separately).

Recommended Applications

  • Blank openings
  • Metal pipes
  • Cables
  • Cable trays
  • Insulated pipes, combination penetrations

Fully Tested and Approved
3M™ B258 Fire Barrier Blocks are firestop tested to the criteria of ASTM E 814/UL 1479 Standard Test Method for Fire Tests of Penetration Firestop Systems, ASTM E 84/UL 273 Standard Test Method for Surface Burning Characteristics of Building Materials, ASTM E 90 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements, and ASTM E 413 Classification for Rating Sound Insulation.

Reliable and Affordable Fire Protection
Effective and easy to install, 3M™ Fire Barrier Block B258 are part of 3M's family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry-preferred line of fire protection products.

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