Combined face, eye and supplied air respiratory protection for welding applications Comes with 3M™ Speedglas™ Welding Helmet 9100 Air, welding filter and 3M™ Versaflo™ Supplied Air Regulator V-500E 3M™ Speedglas™ Welding Filter 9100XX offers variable dark shades of 5, 8 and 9-13 for most types of arc welding Welding filter viewing area: 73 mm x 107 mm Nominal Protection Factor 200 (3B) Light-to-dark switching time of 0.1 ms Delay settings allow you to extend the recovery delay of the welding filter from dark to light, according to welding method Possible to lock-in any shade, e.g. light shade 3 when grinding Side windows (shade 5) can help widen the field of vision 3M™ Versaflo™ Supplied air Regulator V-500E is balanced, belt-worn and easy to adjust with consistent airflow delivery Airflow level adjustable between 170 l/min and 305 l/m Airline supply must be air of breathable quality in order to meet EN 12021 requirements