![](https://rejen-global.com/wp-content/uploads/2021/02/3M™-Fire-Block-Foam-FB-Foam.jpg)
Combines the high-speed application properties of foam and the
long-lasting protection of caulk.
- Ready-to-use — no mixing required
- Expands up to 200% in volume to quickly and effectively seal openings
- Heat-resistant up to 240°F
- Tested to ASTM E 84 (modified) as a Type V Residential Fireblock
- Draftstop — helps reduce air infiltration
- Minimal shrinkage and sag-resistance help ensure longevity