ThermaShield® is an aluminum laminated fiberglass sheet with a full coating of permanent, high temperature adhesive. This unique product applies directly to any clean surface and is an ideal solution for protecting delicate electronic component boxes mounted close to engines or other heat sources. When applied, the aluminum laminate reflects heat away, and the insulating fiberglass backing protects the fragile contents from thermal damage and failure. ThermaShield® Flat contains an entire side of high temperature adhesive.