For the user of a ventilation system, the key elements for determining the appropriateness are comfort and performance of the facepiece and the FM4 Scott Safety offers the highest levels acceptance in the user. Comfort is enhanced with silicone sealing edge LSR and unlimited field of vision (98%) The lateral connection improves comfort and balance Full mask in three sizes, is also certified for use with the Pro2000 filters. Compatible with Proflow, Duraflow and Powered Air Systems CE certification according to EN 12942 TM3 and AS / NZS1716-P3.