The 3M 80610099378 is a part of the company’s Fire Barrier Duct Wrap 615+ product line. This product is a fire-rated, pre-compressed flexible wrap made of inorganic fiber, Portland cement, and filler enclosed in a nonwoven encapsulate material. It is self-extinguishing, non-corrosive, and acoustically rated. It is also freeze-thaw stable and can be installed in wet conditions, making it ideal for a wide range of applications such as commercial and residential fire protection, sound attenuation, and energy conservation. The product meets the American Society for Testing and Materials (ASTM) standard E814, and is approved by the Underwriters Laboratories (UL). It is designed to provide a continuous three-hour fire rating when installed as per ASTM and UL standards.