A space saving alternative to wire racks, these stackable submersible plastic racks are constructed of a special blend of autoclavable polypropylene. This mold-resistant plastic is both safe and sterile for use in the lab. The white racks will sink in a water bath and maintain their stability even in agitated water. Each rack features end plates for labeling as well as numbered and lettered rows for tube identification. Size of each: 9 3/4" x 4 1/10" x 2 1/2".