Gas mask

A gas mask is a kind of mask that fits over the face area and nose. It protects from poison gases and many other hazards in the air. They are often used in war.

upright=0.8|thumb|The label NIOSH uses for gas masks, that show NIOSH has checked the gas mask.

Gas masks in the United States are checked by NIOSH.

 Related pages 
 NIOSH ratings

 References 

Category:Protective clothing
Category:Headgear

pt:Máscara contra gases