Powered respiratory protection for welders. Lightweight, slim design eliminates external batteries and cables. The FlexView welding filter flips up for grinding through a clear lens. 3M Adflo Powered Air Purifying Respirator (PAPR) for welders. Compact, light-weight system with NiMH battery, high efficiency particulate filter, organic vapor/acid gas cartridge, wide leather belt. 3M Speedglas FlexView HWR welding respirator headpiece with flip-up welding filter for grinding. Accepts 9000 / 9002 series ADFs. 3M Speedglas 9002V auto-darkening filter offers user-selectable dark shades 9 through 13 with shade 3 light state. Four-position sensitivity control. Adjustable recovery delay.