HY 10 Pieces/box 8816 Valved Particulate N95 Respirator with Activated Carbon Filter Layer With activated carbon filter, better adsorption against exhaust gas. Cool exhalation valve, comfortable in a long use. With adjustable nose clip and elastic belts, perfect fit. Offers protection when the job requires work around tiny particles. Suggested for painting, grinding, sanding, sweeping and other non-oil based operation.