Taylor-Wharton 35VHC High-Capacity Series Refrigerator. Enables users to store more biological materials at liquid-nitrogen temperatures. Sturdy, five-wheel roller base accessory enables safe and easy transport. Cast-aluminum base 55708-820 fits the 478mm (18.8″) units. The low-liquid-level alarm accessory (55708-900) is best suited for the infrequently used 35 VHC , but is always recommended for stored product protection. Capacity of 30 L.