Introducing SM600L sound thermal insulation engineered for vehicles - the ultimate solution for a quieter and more comfortable driving experience. This high-performance material is designed to deliver superior acoustic absorption, helping to reduce unwanted noise and vibrations within the cabin. With its non-woven, hydrophobic fibers, the SM600L provides exceptional thermal insulation while ensuring durability and resistance to moisture. At 60 inches wide and 1 3/4 inches thick when expanded, this insulation offers ample coverage for your vehicle's needs. Certified to meet the FMVSS 302 federal safety standard, you can trust in its quality and reliability. Whether you're seeking a more peaceful commute or enhancing your vehicle's overall sound environment, SM600L is the ideal choice. For optimal installation, we recommend using Adhesive Spray to ensure a secure and long-lasting application.