ACCUCOLD by SUMMIT Appliance a quality line of general purpose all-zers designed for reliable cold storage in medical, scientific, and laboratory facilities.The FS24L is a compact all-zer designed to reach -20º C, the i temperature for long-term storage of select sensitive materials. The 1.4 cu.ft. manual defrost interior static cooling for stable results. A removable wire shelf allows easy storage options, with a seamless interior liner to simplify cleanup. The dial thermostat is located inside. This unit has a flat door liner as by the CDC.The FS24L includes a factory installed lock for added security, with a reversible door that more convenience when placing the unit. This model can also be customized with a variety of upgrades, including a digital thermostat, temperature alarm, data logger, and more.