The 3M Speedglas 9100 FX-Air Welding Helmet with Fresh-Air III Cooling Valve can help keep workers cool in hot, humid conditions. It features a flip-up grinding visor, assigned protection factor (APF) of 25, and the ability to decrease air temperature by up to 50°F (28°C). When used with 3M Auto-Darkening Lenses, this safety gear helps protect the face and eyes against foreign matter and intense light from MIG, TIG and stick welding.Cool, breathable air This flip-up welding helmet with supplied air cooling valve can help workers in hot, humid conditions. The Fresh-Air III V-100 cooling valve comes with a belt for quick access, allowing welders to control the flow of clean air and lower its temperature. Dependable protection A wide, clear faceshield helps protect the face and eyes against grinding debris. Available Auto-Darkening Lens darkens within milliseconds, designed to protect the eyes throughout the weld process. Flip-up weld shield The flip-up 9100-Series welding shield allows for quick transition between welding and non-welding tasks.