3M N95 Particulate Disposable Respirator is NIOSH certified to have at least 95% filter efficiency at removing solid and liquid particles. It comes with innovative M nose clip that provides a good face seal and the 3M Cool Flow exhalation valve that reduces heat and humidity build up inside the respirator for added comfort. It is lightweight, economical protection and includes no spare parts to clean and maintain. It meets NIOSH 42 CFR 84 requirement and reduces potential for eyewear fogging. It promotes greater worker comfort and contributes to increased wear time. It is applicable in grinding, sanding, sweeping, bagging, machining and other dusty operations. It is sold as 10 per box. Do not use for gases and vapors, including those present in paint spraying operations, oil aerosols, asbestos or sandblasting.