GREAT STUFF™ Fireblock is specially formulated to impede the spread of flames and smoke through service penetrations helping to slow the spread of these destructive elements during a fire.
*70 5F and 50 5 % RH, 1 in bead diameter, 6 in length. Cure rate is dependent on temperature, humidity, and size of foam bead.
**Intended for use in residential application to maintain the continuity of an approved fire block material.
|Curing time (hours):||8|