Refrigerator has a hinged, lockable, transparent top for viewing and protecting container contents. Efficient necktube insert maintains thermal performance. A large necktube opening allows the use of canisters that hold 30-40 percent more material. A high strength aluminum shell provides durability. Thermal barrier, advanced insulation and vacuum provide optimum thermal efficiency. There is also a slotted, numbered indexing handle assembly. Specimen storage canisters are provided with each refrigerator. An optional universal roller base is available. Includes 6 storage canisters. 38 liters capacity. Static hold time: 135 days. Evaporation rate: 0.28 liters/ per day. Working time: 84 days/12 weeks. 5" Necktube diameter. 18.50" Outside diameter. 27.50" Overall height. Empty weight: 31 lbs. Full weight: 102 lbs. 11" Canister length. 4.1" Canister inside diameter.