Proflow's silver heat barrier is made from aluminized heat reflective foil, bonded with fibreglass, withstanding radiant temperatures of up to 450 degrees celsius and 540 degrees celsius when in direct contact. Comes with an adhesive backing allowing this 0.2mm thick mat to be stuck to any clean surface. Face the aluminized side toward the source of radiant heat to correctly shield heat away. Used on Firewalls, ?oor pans, mu?ers, catalytic convertors, exhaust systems, or even fuel cells where mechanical fasteners cannot typically be used.