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.
Key Features
- 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)
Applications
- Blank openings
- Metal pipes
- Cables
- Cable trays
- Insulated pipes, combination penetrations
