TESTED AND LISTED: Up to 2-hours in accordance with ASTM E814 (UL 1479) and CAN/ULC S115
TIGHT FIRESTOP SEAL: Pre-formed foam block maintains tight firestop seal to prevent fire, smoke and toxic gas transmission
SUITABLE FOR MEDIUM TO LARGE APPLICATIONS: Fits medium to large openings in wall and floor through-penetrations
NO CURE TIME: Can help complete projects more quickly
PRIMER PAINT READY: Block is paintable with primer
EASY INSTALLATION: Installation requires no special tools
DESIGNED FOR VERSATILITY: Can be repaired and reused as needed, saving time and labor
PART OF A COMPLETE SYSTEM: Can be sealed with 3M Fire Barrier Rated Foam FIP 1-Step and other 3M fire barrier sealants (sold separately)
For industrial/occupational use only. Not for consumer sale or use
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.
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