Energy efficient and conventionally insulated freezers are well-suited for use in long-term preservation and storage of research samples, blood and specimens. The line promotes cost efficient energy consumption and low heat dissipation. The SANYO MDF-Series ultra-low temperature freezer line includes both 23.5 cu/ft and 17.1 cu/ft models with two insulated inner doors for maximum interior chamber uniformity. MDF-Series ultra-low temperature freezers maintain internal temperatures as low as 㫮 (𤩫 F). All models use SANYO designed compressors specifically for ultra-low temperature applications while providing economical advantages for air handling in facilities that manage heat load produced by freezers.