Cryosystem 4001 W/Plug In Alarm, Lift Off Lid And Roller Base. Includes 4 Racks (Holds 40 Boxes). Liquid Nitrogen Capacity: 121 Liters, Static Evaporation Rate: 0.99 Liters/Day, Working Volume: 111 Liters, Normal Working Days: 70. Holds A Total Of 4000 V