GREAT STUFF FIREBLOCK 99112820 Insulating Foam Sealant, Orange, 8 hr Functional Cure, 40 to 100 deg F, 12 oz

Designed to help save much more than energy costs, GREAT STUFF Fireblock insulating foam sealant insulates and seals service penetrations, providing an airtight barrier that impedes the spread of smoke and flames. GREAT STUFF Fireblock insulating foam sealant is a ready-to-use, minimal-expansion insulating foam sealant that fills and insulates gaps up to 3/4 in to restrict airflow. This distinctly orange solution seals electrical wiring run through wall studs as well as service penetrations in walls and between floors to provide a simple, cost-effective way to maintain the continuity of an approved fire block material throughout the house.