3M 6800 Full Facepiece Reusable Respirator, Medium. Size 1 Count (Pack of 1). Number of Items 1. Large lens provides a wide field of view for excellent visibility. Lightweight well-balanced design and silicone faceseal for enhanced comfort, durability and ease of cleaning. Available in air-purifying and supplied air respirator modes. Center adapter directs exhaled breath downward. 3M Cool Flow Valve makes breathing easier to provide cool, dry comfort. This is a 3M 6800 full face reusable respirator gas mask in size medium. It is a non-domestic product that is not customized or modified. It is designed for personal protective equipment (PPE) use in industrial settings. The mask features a full face design and is suitable for use with replacement cartridges.