Sanyo Ultra-Low Freezer Electric Biomedical made in Japan.  Model: MDF-U4086S, serial number: 21113290, net weight: 276kgs. In addition, the Sanyo Ultra-Low Freezer utilises natural hydrocarbon refrigerants to provide minimal energy consumption reducing environmental impact. Hydrogen carbon refrigerants have a high latent heat evaporation hence efficient at removing from the freezer chamber.