3M B258 Fire Barrier Block 2.36 x 5.12 x 7.87 Inch Fire Protection

Product Description

The 3M B258 Fire Barrier Block is a pre-formed foam block designed to seal larger openings against smoke, toxic gas, and flame. This product is effective for applications requiring fire safety and sound reduction. Its straightforward design allows for easy installation in various industrial and residential settings.

• Pre-formed foam structure for quick installation.
• Maintains a tight seal to prevent fire and gas transmission.
• Re-enterable and reusable, reducing waste.

Product Highlights

This fire barrier block helps protect against hazards in multiple environments. It is particularly useful in blank openings, metal pipes, and cable trays.

Product Information

Standard Information

• Brand: 3M
• MPN: B258

Technical Specifications

• Dimensions: 8 inches long, 5 inches wide, 2 inches high
• Material: Foam
• Fire Rating: Up to 2 hours
• Specifications Met: ANSI Specified, ASTM E814/E84/E90/E413
• Color: Maroon
• Suitable for Use With: Conduit
• Standards/Approvals: UL CS115|UL 1479/273
• Applications: Blank openings, metal pipes, cables, cable trays, insulated pipes, combination penetrations