Feature Premium noise reduction for your audio system Investing in great speakers is a great way to improve your car's sound. But if you don't do anything about the listening environment you may not get the performance boost you hoped for. Morel's Acudamp MAT 227.8 sandwiches three layers — adhesive, butyl, and aluminum — into an acoustic mat that's thicker than Acudamp MAT 221.10, so it'll do an even better job of reducing interior resonance, dampening noise, and providing extra thermal insulation in your vehicle. The material is easy to cut and contours to the shape of your car's interior, while the self-adhesive backing provides long-lasting hold. Specifications Product highlights: 8 sheets of sound- and vibration-dampening material 3-layer design of adhesive, butyl, and aluminum self-adhesive backing provides thermal protection to your car's interior dimensions (per sheet): 18" x 32" x 1/8" covers 32 square feet warranty: 1 year What's in the box: 8 Noise damping sheets