3M Fire Barrier Block B258, Maroon, 2.36 in x 5.12 in x 8 in, 12/Case
Details
- Block is paintable with primer
- Can be repaired and reused as needed, saving time and labor
- Can be sealed with 3M™ Fire Barrier Rated Foam FIP 1-Step and other 3M™ fire barrier sealants (sold separately)
- Firestop tested in accordance with ASTM E 814/UL 1479
- Fits medium to large openings in wall and floor through-penetrations
- Installation requires no special tools
- No cure time means faster completion
- Pre-formed foam block maintains tight firestop seal to prevent fire, smoke and toxic gas transmission
Product Name: 3M™ Fire Barrier Block B258, Maroon, 2.36 in x 5.12 in x 8 in, 12/Case
Product Description: 3M™ Fire Barrier Block B258 is a pre-formed foam block designed for easy installation to effectively seal larger openings against smoke, toxic gas and flame. It is simple to use and helps reduce sound transmission.
A Better Way to Fill Large Gaps
When sealing larger cavities, use 3M™ Fire Barrier Block B258 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. 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 our 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.
Technical Specifications:
- Country of Origin: Germany
- ECCN Number: EAR99
Logistics and Handling:
- 3M Stock: 7010305974
- Legacy Stock Number: 98-0441-1000-9;98044110009
- 3M Catalog Number: B258
- Sales UOM: Each
- Sales UPC: 00076308979393 (076308979393)
- Smallest Saleable Unit UPC: 50076308979398 (076308979398)
- Shipper UPC: 50076308979398 (076308979398)
- Typical Lead Time: 2 Days
- United States Department Of Transportation Ground (US DOT, 49 CFR): NOT REGULATED
- International Air Transport Association: NOT REGULATED
Additional Information:
A Better Way to Fill Large Gaps
When sealing larger cavities, use 3M™ Fire Barrier Block B258 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. 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 our 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.
Important Links:
Tech Data Sheet
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