The Summit AccuCOLD 4.1 Cubic Square Ft. Built-In ADA Medical and Laboratory Refrigerator (FF511LBIMEDDT) is a refrigerator designed for built-in use under counters. Its 20" slim width conveniently houses 4.1 cu. ft. of storage capacity. It operates using auto defrost system with an internal fan for even cold air distribution. Precise temperature management is accessed through the digital thermostat. A high temperature alarm with an external display is mounted on the front door of the unit to warn user of temperature fluctuations that might affect sensitive stored items. Reliable security for the unit is provided by a factory installed keyed lock and a hospital grade cord and plug is included for added protection in high traffic areas. Secure temperature sensitive items with this refrigerator by Summit. Automatic Defrost OperationIt uses auto defrost operation that consistently maintains the temperature condition inside the storage unit. Convenient StorageAdjustable shelves and interior light are provided for a more convenient storage experience that will surely fit your requirements. Medical GradeIt ensures compliance with CDC guidelines of proper medical storage. It features a flat door liner for less grease build up and deeper storage space. Secured StorageThis unit is installed with a keyed lock that you can always count on and a hospital cord with "˜green dot' plug for security in high traffic areas. Environment FriendlyThe refrigerator is 100% chlorofluorocarbon free and does not contain any harmful substances the might damage the ozone layer. MEDDT Series: All-refrigerators and all-freezers include the features most commonly requested by medical and scientific facilities. Features: Digital thermostat for advanced temperature control, a high/low temperature alarm with a NIST calibrated temperature readout, hospital grade plug for added safety, keyed locks, and an access port for user-installed monitoring equipment