These polycarbonate storage towers are ideal for benchtop or incubator use, transportation, as well as for freezer and general purpose storage. A 6 x 6" footprint saves valuable bench space. Available in 4 and 8 level configurations, both towers accommodate Cryo-Safe® Vial Storage Box F18849-0001 shown above (sold separately). Each rack support platform measures 51/2 x 51/2". Autoclavable at 121°C.