High efficiency, heavy duty yet light weight to wear. this mask is great protection for yard work, vacuuming and driving in polluted areas. good for up to 150 hours. excellent, economical and maintenance-free protection that workers are quick to accept. custom fit, secure seal and reduced potential for eyewear fogging promote greater worker comfort and increase wear time. "¢ meets niosh 42 cfr 84 n95 requirements. "¢ lightweight construction. "¢ all filter design. "¢ adjustable noseclip. "¢ advanced electorate media. use for: solids such as those from processing minerals, coal, iron ore, flour and certain other substances. liquid or non-oil-based particles from sprays that do not also emit harmful vapours. suggested applications: grinding, sweeping, sanding, bagging, and other dusty operations.