Amazon.com: Electronics: SOUND DEADENING SHEET 10"x10": "Product Description This multi purpose, noise reduction material actually absorbs the vibration of any solid material. It is made of a mineral filled asphalt polymer that transforms vibrational energy into thermal energy (low level heat). The flexible nature of the damping sheets enables it to mold and conform to irregular surfaces. They can be cut using a standard razor knife and are self adhesive for easy peel / stick application. Can handle continuous temperatures -30? to 350? F. Thickness: .070'. Automotive You can reduced interior noise levels 3-10 dB by applying the damping sheets to the door panels, firewall, floor pan, trunk lid or any interior sheet metal panel. Top performers in car audio competitions know that a reduction of 3 dB in the interior noise level is like doubling your effective amplifier power! Installing damping sheets will improve the total ride quality of any automobile! Home Theater Can be used as a constrained layer between two sheets of drywall (sheetrock) to reduce wall resonance and control noise and vibration in home theater and Hi Fi listening rooms. Speaker Building Perfect for lining the interior of your speaker cabinet. It will help reduce cabinet resonances and standing waves. Can also be used as a constrained layer between two pieces of wood."