Heat Stop Inherently Flame Retardant is a material treated with a special high-temperature coating designed to dissipate heat across the fabric surface. Ideal to protect stage and theater curtains from hot stage lights. This material is engineered to withstand high temperatures and offers continuous protection at operating temperatures up to 1500°F (816°C) and peak temperatures up to 2000°F (1093°C). Can also be used to separate high-temperature areas and protect equipment in smelting facilities.