Reflect-A-Cool Heat Barrier 12 x 24

The Design Engineering Reflect-A-Cool Heat Barrier 12 x 24 is a self-adhesive aluminized fiberglass cloth heat shield engineered to reduce radiant heat transmission in engine compartments, under-floor applications, and near exhaust components. This 12-inch by 24-inch reflective barrier uses a silvered fiberglass construction to bounce infrared radiation away from sensitive components, electronics, and fuel systems, helping maintain cooler operating temperatures and protecting surrounding materials from excessive heat damage.

The self-adhesive backing allows quick, permanent installation without mechanical fasteners or additional adhesives. The aluminized fiberglass cloth material withstands continuous exposure to high temperatures while remaining lightweight at just 0.33 pounds—a practical advantage when managing weight-sensitive applications. The material's reflective properties work by reducing heat transfer through radiation, a critical mechanism in engine bays where convective and conductive heat management alone may prove insufficient. The 12 x 24 sizing covers approximately 2 square feet per sheet, making it ideal for targeted thermal protection around fuel lines, intake manifolds, transmission pans, and firewall areas where underhood temperatures exceed 200–300°F during normal operation.

This product serves builders, technicians, and enthusiasts working on engine bay thermal management, vintage restorations requiring heat-sensitive wiring protection, and performance platforms where fuel system reliability depends on maintaining precise temperatures. Custom builders often layer multiple Reflect-A-Cool barriers to create comprehensive underhood thermal zones, particularly in turbocharged or supercharged applications where sustained heat output is elevated. The Design Engineering brand is recognized in the automotive thermal management segment for products meeting OEM and aftermarket performance standards.