ITEM NAME:40X40inch Car Heat Shield Insulation Sound Deadener Firewall Aluminum Foil 5mm Description: The surface high-fiber cloth is fiberglass,scratch resistant. Strong sound insulation and absorption performance,heat insulation, damping and antisepsis. Block transmit sunlight, engine, exhaust pipe heat to the cab, reduce air.1 Piece Heat Sound Insulation Shield. Block transmit sunlight, engine, exhaust pipe heat to the cab, reduce air conditioning energy consumption, saving fuel. Protects engines, electrics and paintwork from the heat caused by and exhaust.