Firefoam B2 2hr Hand held Expanding Fire Foam 750ml

The foam expands on application to up to 50 times its original volume

Quick setting one part polyurethane foam

B2 2 hour fire resistance properties.

Filling: Gaps around pipe entries through fire rated walls
Provides a fire rated seal around window and door frames
Electrical chasing where a fire rating is required.
Any area where fire or smoke can breach