Thermo-Guard FR by Thermo-Tec is your solution for both heat and sound insulation. This lightweight, durable shield does everything: reduces sound, absorbs vibration, protects from radiant heat and provides an extra layer of insulating padding. Thermo Guard FR features 100% synthetic fiber felt that provides sound and comfort control and a high-tech foil heat barrier that blocks more than 90% of radiant heat. Thermo-Guard FR is very simple to apply and it can be trimmed with a razor knife to fit anywhere. Thermo-Guard FR is great for use in trucks, RVs, buses, cars, aircraft and homes. You can apply it with Thermo-Tec Spray Adhesive (sold separately), with zip ties, rivets, and more. The part number for this item is 14125 and it measured 48" by 72". It can be cut to any size with a razor knife.