Specification Form: Square Material: Rubber Grade: A Flexion Resistance: Strong Compression Resistance: Strong Form: Fibrous Size : 300cm x 50cm Thickness: 3mm/6mm/10mm Temperature range: 80 -90 (No drive) Characteristics: 1. This product is delivered with a strong adhesive, at room temperature greater than 0 degrees without additional heating can be directly stuck. The higher the exterior temperature of the dough, the more the solid construction cannot be removed after the dough is extremely strong! 2. Noise experts recommend doing acoustic insulation at the same time, do not forget the door of vibration, in the dough before cotton sound can be displayed before a few vibrations excellent effect, the general needs of all the Helve with three cars of about 10 meters. 3. Special note: if owners such as engine noise, you want to completely reduce engine noise alone on the hood on this cotton sound insulation point is not as simple as engine noise cotton recommended to hood and U-Slot noise effects must use sound insulation in cotton aluminum leaf + aluminum plate plate shock butyle rubber shock (around 18-25), engine noise is a very complex system of sound engineering , you must make wings, firewall, dashboard in the shape of a slot sound insulation engineering! packaging included 1 x absorbent cotton