Establish a Strong Firestop Barrier?Designed to prevent the spread of fire, smoke and noxious gas, 3M™ Fire Barrier Sealant IC 15WB+ is a one-part, gun-grade, latex-based, intumescent firestop sealant. This firestop sealant provides up to 3-hour fire protection in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115. In addition, this product is fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079). This sealant has been formulated to form a monolithic firestop seal that also helps minimize sound transfer, acting as a barrier to airborne sound transmission (STC-Rating of 54 when tested in a STC 54-rated wall assembly).Recommended Applications HVAC ducts and vents Metallic and non-metallic, including CPVC pipes Blank openings Single and bundled cables Insulated pipe Pipe and cable through-Penetrations Busways Combos Rated wall, floor and floor-ceiling assemblies Static construction jointsFormulated for Protection and Ready for Inspection3M™ Fire Barrier Sealant IC 15WB+ is formulated to be easily cleaned-up with water. This sealant is paintable, as well as re-enterable and repairable. It is a halogen-free sealant that features exceptional adhesion, excellent caulk rate and sag-resistance. In addition, inspectors can instantly recognize 3M™ Fire Barrier Sealant IC 15WB+ by its distinctive yellow color.3M™ Fire Barrier Sealant IC 15WB+ firestops through penetrations passing through fire-rated floor, floor/ceiling or wall assemblies, as well as other fire-rated interior building partitions and assemblies (e.g. static construction joints or blank openings). In addition, the unique intumescent property of this material allows 3M™ Fire Barrier Sealant IC 15WB+ to expand and help maintain a firestop penetration seal for up to 3 hours of fire exposure. 3M™ Fire Barrier Sealant IC 15WB+ bonds to most construction substrates, including: gypsum wallboard, concrete, metals, wood, plastic and cable jacketing. This sealant meets the intent of LEED® VOC environmental regulations, International Building Code (IBC) and other key life safety building code requirements.Reliable and Affordable Fire ProtectionEffective and easy to install, 3M™ Fire Barrier Sealant IC 15WB+ is part of the 3M family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry-preferred line of fire protection products.