GTMat 100sqft 36in Wide Single Roll 80mil Ultra Sound Deadener GTMAT Sound Deadener adheres to almost any surface instantly, and is pressure sensitive. The harder the pressure of application, the stickier the bond. Clean, grease-free surfaces provide the most durable applications. In general, the warmer the temperature, the tackier and more pliable the adhesive will be when handling and applying. Recommended application room temperature is between 50F to+120F (10C to 50C). Package Includes 100sqft GTMAT Ultra 80 Mil and Easy to follow Installation Instruction Sheet, Application Roller, GTMAT Degreaser, GT MAT Decals Toll Free Tech Support GTMAT Sound Deadener is an extremely durable product. Rated at 20 years fail-free for exterior use, this product will deliver a lifetime of service in your automobile. GTMAT is water, oil, solvent, salt, rust, and heat resistant. Nominal 80 Mil Thick, 4 Mil Aluminum Shield, Sound AND Heat Insulation, Massive DB & SPL Gains GTMAT Sound Deadener has a superior temperature adhesion range that is much higher than the leading discount dampener