FR face coverings are intended for use by workers who are at risk for short duration thermal exposure on the job and are required to wear a face covering. There are 5 face coverings in each pack. Bulwark FR face covering will not melt and drip and will self-extinguish upon removal of the source of ignition. Bulwark makes no claims of performance regarding the effectiveness of our mask to protect the wearer against exposure to COVID-19 or any other airborne threat. This is NOT a replacement for other required PPE intended to protect the wearer