Great Stuff 99112831 Foam Sealant Smart Dispenser Orange Polyurethane Fireblock 12 oz Orange. SEALANT FIREBLOCK ORANGE 12OZ. 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.
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