You will cease to worry about your low temperature storage problems with the ULT1790-10-A Ultima PLUS Ultra-low Temperature Chest Freezer from Thermo Scientific Revco. It has a 17 cu. ft. capacity and a manual defrost with various other advanced features like the easy to use microprocessor control that programs temperature/ alarm set points and on-board diagnostics, a state-of-the-art refrigeration system that improves temperature control for more consistent temperature cycling and recovery, resulting in a more stable temperature for safer sample protection. Heavy duty casters with locking tandem wheel design for easy, smooth mobility. This unit further has an intuitive settings controls temperature, alarm setpoints, audible/visual alarm and 12-character message system and more that makes it a highly suitable freezer for various biological and chemical storage.