2 in x 5 in x 8 in 3M B258 Fire Barrier Block

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.

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)

12 pcs/ctn