troic15wb+4.5gal
3M 7000059404 3M™ Fire Barrier Sealant, IC 15WB+, 4.5 gallon (17 L)
3M™ Fire Barrier Sealant 15WB+ is a high-performance latex-based intumescent firestop sealant. When properly installed, this product provides up to three hours of fire protection in tested and listed systems.