This upright laboratory refrigerator has an advanced forced-air cooling system with a uniform cabinet temperature range from 2 to 4 Deg C. It is equipped with an automatic defrost, positive door latches with key lock that increases security and a high visibility digital temperature display gives comfort to users. It also features a rapid temperature recovery system after door openings ensuring maximum temperature stability of the unit's interior. PR55D-1B is built for storing valuable products that are temperature sensitive and need high security.