Specifications: Function: Car heat / sound insulation Material: Butyl Top layer: Aluminum foil + Butyl core Under layer: Strong back glue Each individual sheet size: 20"x12" Number of sheets: 20 Total coverage: 20pcs 20"x12"=32.3sqft=3sqm Total Thickness: 2mm=80mil KILL: Road Noise, Engine Noise, Panel Rattle/resonance, and Outside Noise. IMPROVE: Driving Experience and Speaker sound Levels and Quality. ADVANTAGE: Heat-resistance, Reinforced/Crush Resistant, Mildew&Mold Resistant, Water resistant, Non-toxic Package include: .
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