The 3M N95 Particulate Respirator is designed to help provide comfortable, reliable worker protection against certain non-oil based particles. Their lightweight construction helps promote greater worker acceptance and comfort and increased wear time. Workplace applications include grinding, sanding, sweeping, bagging and other dusty operations. These safety respirators feature 3M's Advanced Electret Media (AEM), welded strap attachment, soft nose foam and adjustable nose clip to help provide a custom fit and secure seal. Style 3M8210 dust masks have no exhalation valve and are sold 20 per dispenser.