Grower?s Edge? Clean Room Disposable Respirators are NIOSH-approved N95. The Grower?s Edge? Disposable Particulate Respirators are designed to help provide comfortable, reliable worker protection against certain non-oil based airborne particles. Their lightweight construction helps promote greater worker acceptance and comfort and increased wear time. Available in a fold-flat style or conical style. Sold with or without an exhalation valve. They feature an adjustable nose clip and a heavy-duty head strap. The Fold-Flat Respirators have active carbon.