3M Exhalation Valve Filter 604, Pack of 6 EVF

Designed to mount on the valve cover of the 3M Reusable Respirator Half Facepiece 6000 Series. The Exhalation Valve Filter is designed to help filter the exhaled breath of the respirator wearer and provides source control when worn with the 3M 6000 Series Half Facepiece Reusable Respirator.