Fire-resistant, as well as self-extinguishing, and registered as such by the California state Fire Marshal's office. Exclusive glass filled polypropylene mounting brackets (included) reduce strip curtain installation time by 90%. Pre-punched strips simply hook on and will not accidentally come off. 8" wide x 0.08" thick strips have a 50% overlap making them ideal for passageways and outdoor entrances where temperature (temperature resistant from -10 to +150 degrees F), noise and/or dust control is necessary. , Lot of 1