Sound Deadening Mat Automotive Thermal Deadener Deadening 70mil 12.5sqft w/Free Installation Roller Package contains 1 roll of 18 inch wide x 8.3 feet long Sound Deadening Mat, Free Plastic Roller and Instructions Sheet. Sound Deadening Mat is made from a specially formulated high performance compound that is proven to reduce road noise, rattles and vibration while simultaneously improving your sound quality. The superior ingredients in the extremely durable Sound Deadening Mat also make it an effective thermal barrier to keep the heat out. Available in stock for immediate shipment. Extra shipping charges apply to HI, AK, PR and International Destinations.