• High performance respirator with an exhalation valve to make the masks easier to breathe through in hot or humid work conditions.  
• Unique exhalation valve offers maximum inhalation protection while providing minimal exhalation resistance that combines with all the functions of the standard respirator to offer the proper fit and durability. 
• Special featured welding elastic which is an alternative choice for head strap.
• NIOSH Approval TC-84A-4563 FDA 510 (K): k020474  

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