DEI's Under Hood Thermal Acoustic Lining was designed primarily for automotive 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" thick, high quality, marine grade acoustical foam with a fiberglass reinforced reflective aluminum skin while the 5 mil acrylic adhesive provides a permanent bond. Under Hood Thermal Acoustic Lining not only insulates the underside of the hood for sound deadening and thermal control, it also protects the vehicle's paint finish. 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. Insulate from heat while reducing noise & vibration Self adhesive - peel & stick application Protects paint finishes 3/4" thick 32" x 54" (12 sq ft) Temp range: -45F to 275F