3M Supplied air respiratory system with V-100SR vortex cooling valve with schrader fitting. Welding helmet can provide overhead protection, increased peripheral vision, excellent optical quality and function. Auto-Darkening Filter not included. Welding respiratory protection system featuring the V-100SR cool-air valve with Schrader fitting. Lightweight belt-mounted valve permits welders to lower temperature of air entering headpiece by up to 50 degree F (28 degree C), ideal for hot, strenuous jobs. Flip-up assembly for grinding and prep work. SideWindows – Shade 5 side filters that increase peripheral vision. Ergonomic, adjustable head suspension for increased comfort, helmet stability and weight distribution. Auto-Darkening Filter not included – Compatible with all 3M Speedglas Filters 9100 (V, X, XX). Offers Assigned Protection Factor (APF) of 25 when used as a NIOSH-approved system. Meets ANSI Z89.1 – 2009 requirements for Type 1 Class G hardhats. Meets ANSI Z87.1-2010. Storage bag and welding cap included. Air source: SAR. Brand: Speedglas. Component type: SAR Systems. Headgear type: hardhat with faceshield and welding shield. Helmet Series: 9100 Series.