Bag is securely supported on a stainless steel wire frame and polypropylene bottom, which also serves as a containment tray in the event of bag leakage. Tray is safety orange in color for easy identification as a biohazard containment system. Autoclavable at 121¦C (250¦F) to maintain sterility. The small bag holder is ideal for benchtop use. These lightweight units are shipped unassembled for more economical transportation. Assembly takes only minutes and is permanent.