Published Dec 6, 2021 at 19:36pm ET
For best effectiveness, replace every 3-6 months ( 10 uses ) . KN95 Masks Individually Wrapped N95 KN95 and KF94 masks and even though N95 masks are made to filter out a high percentage of airborne particles, they aren't perfect by any means. Free N95 masks free N95 masks mn what kind of face mask is suggested to wear when working with wood? Most people will only use their masks once and throw them away. Choose whether you want a multiple-use or disposable mask 3. Only to find out later that you should've re-used it?