Sold as 1 each. Price is per each.
Minimum order: 12 each. Order increment: 12.
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.
Features
- 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 details
| Brand |
3M |
| Line |
Fire Barrier |
| Catalog number |
B258 |
| 3M stock number |
7010305974 |
| Product type |
Firestop Blocks |
| Selling unit |
Each |
| Minimum order |
12 |
| Order increment |
12 |
