Boom Mat Under-Hood Thermal Acoustic Lining was designed primarily for engine compartments as a way to greatly reduce heat and noise with a simple and easy peel and stick application. Extreme engine heat and noise often is a problem with today's modified vehicles packed with high performance components. Made of 3/4-inch thick, high quality, industrial acoustical grade foam with a reinforced reflective aluminum covering, Under-Hood Thermal Acoustic Lining not only insulates the underside of hoods but serves as a sound deadener and thermal control while protecting paint finishes. Under-Hood Thermal Acoustic Lining can also be used as noise control applications such as on generator boxes and many industrial uses including HVAC applications.