Thermo-Tec 14130 24" X 48" One Sided Thermo Guard Flame Retardant This lightweight, durable shield does everything: reduces sound, absorbs vibration, protects from radiant heat and provides an extra layer of insulating padding The product features 100 per cent synthetic fiber felt that provides sound and comfort control and a high-tech foil heat barrier that blocks more than 90 per cent of radiant heat up to 1500 degrees Fahrenheit Thermo-Guard FR is very easy to apply - it can be trimmed to fit anywhere; great for use in trucks, RVs, buses, cars, aircraft and homes 1/4-Inch thick, Thermo Guard FR provides a very high level of performance with minimal thickness