N95 Masks Overview | Disposable Respirator Guide
For almost any N95 mask, you can find a similar model with an exhalation valve as well. Nosepiece and headstraps. The nosepeice and headstraps to an N95 mask play an important role in not only comfort of the mask, but also effectiveness. An N95 mask needs to fit tightly against the wearer’s face for full effectiveness. Mask shape.