Accucold's VLT series includes user friendly chest and compact laboratory freezers capable of reaching -35 C (-31 F). The VLT850 is a chest freezer with 9 cu.ft. of storage capacity. Designed for optimum temperature performance, it can safely hold vaccines, pharmaceuticals, and even frozen foods under stable conditions with manual defrost operation. A digital thermostat includes easy electronic controls for precise temperature management and a battery-powered thermometer is installed to provide the most accurate temperature readout. The thermometer includes an audible alarm to warn of any high or low variations in temperature. Corner protectors help to protect the unit's exterior from bumps or dents and counterbalanced hinges provide an easy lift on the lid. A lock is included for added security. This unit is UL-S listed to NSF-7 and UL-471 commercial standards. NOTE: Accucold freezers are purpose-built to the support meeting the current CDC (Centers for Disease Control) guidelines for the storage of vaccines. As referenced in the current Vaccine Storage and Handling Toolkit, these units incorporate several key features for stable operation. For additional temperature assurance, the CDC recommends a calibrated digital data logger (DDL), which can be added with the factory-installed option DL2B or addition of the DL2BKit accessory. Select Accucold products have been tested and certified to the new NSF 456 standard, and are now available for purchase. For additional information, contact our products specialists.