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

Our 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.
Price: $375.13

(Case of 12 Each)

  • $375.13
  • Case of 12 - $375.13
  • Return Policy

    Our site states no returns allowed; however, in addition to a few exceptions, if your order is defective or damaged, the order will be replaced with good product. 

    • Weight
      14.8 lbs
    • SKU
    • UPC/ISBN
  • Industry
  • Lead Time
  • Manufacturer
  • SAP
  • 3M ID
  • UPC
  • Product Formal Name
    3M™ Fire Barrier Block B258, Maroon, 2.36 in x 5.12 in x 8 in, 12/case
  • Brand-old
  • Case Unit
    Case of 12
  • Unit of Measure
  • Product ID
  • Estimated Lead Time
  • Size
    2.36 in x 5.12 in x 8 in
  • Color
  • Color-old
  • Inventory Status Code
  • Data Sheet
    https://multimedia.3m.com/mws/media/1194121O/3m-fire-barrier-blocks-plugs-planks-flyer.pdf&fn=Blocks Plugs Plank Flyer.pdf
  • Technical Information
    https://multimedia.3m.com/mws/media/1194118O/3m-fire-barrier-blocks-plugs-planks-technial-data-sheet.pdf&fn=Block Plug Plank Technical Data Sheet.pdf
  • Country of Origin
  • Product Form
  • Industries
  • Return Policy
    No Return
  • Width
    2.36 in
  • Length
    5.12 in
  • Box Length (in)
  • Box Width (in)
  • Box Height (in)
  • Bullets
    • Bullet 1
      - 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)
  • Transportation
    • ECCN Number
    • Harmonized Tariff Schedule Number
    • UNSPSC Code
    • United States Department Of Transportation Ground US DOT, 49 CFR
    • United States Department Of Transportation Vessel US DOT, 49 CFR
    • NMFC Item
    • NMFC Class
    • NMFC Sub
    • Transport Protective Service
    • International Air Transport Association
    • International Maritime Organization
    • Flashpoint Transport
      No Flash Point
  • SKU

A Better Way to Fill Large GapsWhen 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 ApplicationsBlank openingsMetal pipesCablesCable traysInsulated pipes, combination penetrationsFully Tested and Approved3M™ 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 ProtectionEffective 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.

FREIGHT FREE on purchases with a subtotal of $4000.00 or more.

Our site states no returns allowed; however, if your order is defective or damaged, the order will be replaced with good product. In addition, we will attempt to return all your product (not only damaged product) if 3M grants the return based on various factors. Some items may be approved for return pending approval from 3M. Some but not all factors include if the item is a 3M stock item and elapsed time from receipt of product to issued return request. Note: 3M will not accept a return if the item is made to order or if the order is less than $600.00. Please double check accuracy of your orders prior to placing them. Details regarding if an item is stock or made to order can be found in the specifications tab of the item page. N = Made to order Item. S = Stock Item. We cannot guarantee any returns.

If you received a defective or damaged shipment, please email us at support@industrialgeneralstore.com explaining in detail the reason for requesting a replacement so we can contact 3M and initiate the return and new shipment.

3M Fire Barrier Blocks, Plugs and Planks

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