This full facepiece respirator is the top of the line in protection, comfort, and versatility. This respirator can be used for air purifying, PAPR systems, supplied air systems, and escape only SCBA systems (requires A504500 for use in any respiratory system). It features a soft and comfortable silicone construction, a double flange face seal, six adjustable headstraps, a scratch-resistant polycarbonate face shield, and a speaking diaphragm for clear and reliable communication. NIOSH approved. Case Qty: 4