Patented design ensures the highest in archieve storage integrity. Dual indexing system - 1-81 and A1 to J9 - to match your workflow, hinged lid to ensure lid is placed on correctly and markings are in synch with samples, lid stays attached to base minimizing risk of lid contamination, easy to open when frozen, plastic 81-place grid with adjustable slats. Holds 81 1 ml or 2 ml cryovials and microfuge tubes. Available in single-color packs of 5 or 50. 13.3. x 13.3. x 5.1 cm.