Set with fan unit SR 500 and protective helmet SR 580 with welding visor SR 584. Includes fan unit SR 500, protective helmet SR 580 with visor, welding cassette SR 584, passive welding filter shade 10, STD battery, battery charger SR 513, leather belt SR 503, 2 pcs particle filters SR 510 P3 R, 2 pcs filter adapters, 10 pcs pre-filters SR 221, 2 pcs steel mesh discs SR 336, 2 pcs pre-filter holders, flow meter, plug set, cleaning cloth, and user manuals.