This ULT10140-9-V model, Ultima II Cryogenic Chest Freezer from Thermo Scientific Revco gives an extraordinary performance, ideal for critical cryogenic lab storage. It features a low-profile design for easy access to items, a heavy-gauge steel cabinet with high-impact powder paint finish and a heavy-duty counterbalanced lid with integrated keyed lock and independent sublids. The double-seal lid gaskets minimize frost buildup while the foamed-in-place closed-cell, CFC-free urethane insulation allows excellent temperature maintenance. Its refrigeration system has an exclusive mixed refrigerant autocascade with a single, orbital air-cooled compressor, a downfeed evaporator with a high-capacity air-cooled condenser with dual condenser fans for higher efficiency. There are more functions incorporated in this unit that combines to give the user the best and reliable storage.