Full Face Mask SFERA (Class 3)

• facepiece consisting of high-quality EPDM • patented anti-fogging, non-reflecting, distortion-free and anti-scratch polycarbonate visor shield with very large field of vision • with standard thread connection DIN EN 148-1 • built-in speech diaphragm • the outstanding transmission of the voice allows the use of megaphones, telephones and two-way radios • universal size allows the mask to fit tightly but without pressure irrespective of the shape of the face • 1 large exhalation valve with exhalation valve pre-chamber results in low exhalation resistance and prevents dangerous media from penetrating the inside of the mask • the inner mask is equipped with 2 check valves which reduce clearance volume and prevent the visor shield from misting up through even visor ventilation • approved for fire fighters more