Manufactured for us in Denmark by ELCOLD, Accucold EL11LT is a -45º C capable chest zer built with solid insulation for laboratory and life science storage applications. This 4.8 cu.ft. chest zer uses static manual defrost cooling to maintain constant temperature, with an externally controlled digital thermostat to ensure easy temperature monitoring. Extra thick 4 ½" thick insulation added efficiency and reliability. Additional features include a solid, easy-grip handle complete with factory installed lock, a sturdy set of casters, and counterbalanced hinges for comfortable loading and unloading. This unit includes a factory-installed probe hole to allow users to install their own monitoring equipment.The EL11LT is UL-S listed to ANSI-NSF standards for commercial use and is designed to operate between -10º C and -45ºC. Additional sizes are available. Browse our website to explore more options.NOTE: Accucold zers 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 to the new NSF 456 standard, and are now available for purchase. For additional information, contact our products specialists.