This radiant heat shield barrier is used to protect paint from blistering on body panels such as hoods. It may also be used to shield radiant heat from floor boards and fire walls. This heat shield barrier is designed to be used underneath the vehicle, stopping heat before it enters vehicle interior. HP Heat Shield Mat is particularly effective when used to reflect heat away from the diesel particulate filter, keeping your cab cool. Place aluminized side towards the source of radiant heat to shield heat away. This product withstands 1100°F of radiant heat and up to 450°F of direct heat. Apply using high temperature glue, silicone or fasten down with screws or rivets. Bulk quantities available.