Labelmaster's selection of Ambient Packaging includes infectious substance shippers with 120mm or 70mm pressure vessels. The 4GU-certified shippers allow for flexibility in inner containers. Ambient Packaging meets the requirements of ICAO and 49 CFR for Class 6.2 shipments. All our infectious substance shippers are large enough to meet FedEx minimum size and labeling requirements, so they don't require an overpack. Our Ambient Packaging includes a pressure vessel with cap, bubble sheet, absorbent disks, Infectious Substance Label and UN marked fiberboard box.