Half Mask Respirator, 8000 Series, Not Rated, Medium. Soft, durable facepiece, extra-wide sealing surface seals comfortably to face. Exhalation valve positioned for better communication. Low profile for wide field of vision. Cartridges have a snap-in mount for easy replacement. New inhalation valve on each cartridge, fewer replacement parts. Living hinge allows head harness to be folded comfortably around neck when not in use. 100% PVC-FreeĀ®