Eliminate road noise, body panel vibration and excess heat from your vehicle! X-MAT® Lightweight Sound and Audio Barrier provides the ultimate in acoustic and thermal protection for your muscle car, street rod, boat or RV Lightweight X-Mat with 2 layers offering great temperature and sound reduction capabilities Closed-cell foam with waffled foil facing supplied in one sheet for large areas Easily trimmed and installed under roof panels under hoods, trunks and more so you can enjoy your ride in greater comfort Conforms well to complex interior contours and shapes Withstands up to 350 °F, reduces heat as much as 105 °F and sound by as much as 8dB Covers 13.8 square feet Eastwood\'s X-MAT® Products lead the way in automotive sound control and heat abatement technologies. X-MAT® is engineered for both classic and late model vehicles to accommodate the needs of today\'s demanding environments. X Mat Underhood and headline Mat is perfect for outer paint protection, heat absorption as well as reducing rattles and road noise. Maximum temperature 350°F, reduces heat by as much as 105°F and a decibel reduction as much as 8 db or 9%. Easy to cut and contour and the strong adhesive back ensures they will stay in place for years to come. Includes 1 sheet 51In. x 39In. x 1/4In