Respirator

A respirator mask, comprising:

• sealing structure arranged to seal around at least a nose and mouth of a wearer;
• a filter cartridge operatively coupled to a front of the sealing structure and configured such that air essentially only enters the respirator mask through the filter cartridge, the filter cartridge including a pleated particulate filter medium and a transparent front cover, the filter cartridge, having the pleated particulate filter medium and the transparent front cover, configured to be removable, the filter medium extending around a perimeter of the filter cartridge, an arrangement of the sealing structure and a portion of the filter cartridge leaving a central area of the respirator mask unobstructed, the central area defined so as to coincide with at least the mouth of the wearer when the respirator mask is worn;
• the transparent front cover sealed over the central area;
• a bezel adapted to be releasably attached to a front of the filter cartridge to cover at least a portion of the filter cartridge, the bezel having an opening, wherein the opening coincides with the transparent front cover and leaves the transparent front cover exposed so that at least the mouth of the wearer is visible when the respirator mask is worn;
• and
• strap structure adapted to hold the respirator mask in place on a face.