3M 7000126399 is a full facepiece headgear designed for protection against mold and silica hazards. It is compatible with 3M PAPR and supplied air systems, offering enhanced comfort and silicone faceseal. The product features Cool Flow™ exhalation valve, eye protection, and spare parts availability. The connection type is bayonet and DIN, and it does not support a clip-on welding shield. Despite being reusable, it requires maintenance and does not include cartridges or filters. The 4-point strap suspension with a small mask size ensures a secure fit. This product provides a qualitative fit test protection factor of 10 and a quantitative fit test protection factor of 50.